Open Port Research Articles

Development of plutonium fuel facility decommissioning technology to accelerate glovebox dismantling and reduce air-fed suits based operations

The Plutonium Fuel Fabrication Facility is currently in the decommissioning phase, with glovebox dismantling operations ongoing since 2010. During conventional glovebox dismantling operations, the glovebox to be dismantled is enclosed within plastic tents to contain contamination. The glovebox is then dismantled by workers wearing air-fed suits with thermal or mechanical cutting tools, which typically generate dross or sparks in the form of radioactive aerosols during cutting. Despite the longevity and meticulous organization of this manual method, the workload remains considerable, while the allowable working time is limited. In addition, the potential for inhalation exposure to plutonium is elevated in the event of an accident given the contamination of the work area. To overcome disadvantages associated with conventional glovebox dismantling methods, new methods are currently being developed. The primary objective is to reduce the reliance on operation based on air-fed suits and enhance worker safety by introducing remote equipment and a new floor-reinforcing panel. Another objective is to suppress waste generation by reusing all equipment on multiple occasions which is achieved by developing a containment system that have a large open port with a pallet for the storage and reuse of equipment for successive operations. Furthermore, a glove operation compartment is designed and tested for the manual handling of dismantled materials as an additional strategy to reduce work based on air-fed suits and mitigate secondary waste generation.

High-resolution acoustic ejection mass spectrometry for high-throughput library screening

An approach is described for high-throughput quality assessment of drug candidate libraries using high-resolution acoustic ejection mass spectrometry (AEMS). Sample introduction from 1536-well plates is demonstrated for this application using 2.5 nL acoustically dispensed sample droplets into an Open Port Interface (OPI) with pneumatically assisted electrospray ionization at a rate of one second per sample. Both positive and negative ionization are shown to be essential to extend the compound coverage of this protease inhibitor-focused library. Specialized software for efficiently interpreting this data in 1536-well format is presented. A new high-throughput method for quantifying the concentration of the components (HTQuant) is proposed that neither requires adding an internal standard to each well nor further encumbers the high-throughput workflow. This approach for quantitation requires highly reproducible peak areas, which is shown to be consistent within 4.4 % CV for a 1536-well plate analysis. An approach for troubleshooting the workflow based on the background ion current signal is also presented. The AEMS data is compared to the industry standard LC/PDA/ELSD/MS approach and shows similar coverage but at 180-fold greater throughput. Despite the same ionization process, both methods confirmed the presence of a small percentage of compounds in wells that the other did not. The data for this relatively small, focused library is compared to a larger, more chemically diverse library to indicate that this approach can be more generally applied beyond this single case study. This capability is particularly timely considering the growing implementation of artificial intelligence strategies that require the input of large amounts of high-quality data to formulate predictions relevant to the drug discovery process. The molecular structures of the 872-compound library analyzed here are included to begin the process of correlating molecular structures with ionization efficiency and other parameters as an initial step in this direction.

NetSentinel applications for website security

NetSentinel is an extensive web security platform designed to scan, detect and protect websites from potential vulnerabilities and cyber-threats. NetSentinel offers a proactive approach to strengthen and safeguard the website’s security, in an era where data breaches and cyber-attacks are common. The platform analyzes critical security features like SSL security validity, DNSSEC implementation, threat detection, security headers, firewall, and open ports. The main feature of the platform is the scoring mechanism, which assesses the website’s overall security to ensure it is protected from potential threats. The scoring method assigns different weights to the various security features according to their importance in the calculation. This scoring system helps users focus on the most important vulnerabilities and gives clear, practical advice on how to mitigate risks. Along with the main scoring feature the platform also includes 24 other critical security features which are Server location, Whois, DNS Data, DNS Records, Archives, Carbon Footprint, TLS Cipher Suites, TLS Security Configuration, TLS Handshake Simulation, Status, Traceroute, Blocklists, Pages, Social Tags, Headers, HSTS Check, Domain Rank, Tranco Rank, Linked Pages, Mail Services, Redirects, Security Txt, Robots Txt. NetSentinel breaks down complex information into a simple, easy to understand security score, which makes security assessment easier. It also offers clear explanations of the issues and provides step-by-step recommendations on how to fix them, helping users improve their overall security without needing advanced technical knowledge to be possessed. Using this platform, organizations can enhance their site’s ability to withstand cyber threats, ensuring data integrity and secure communication. NetSentinel helps users take control of their web security by balancing technical accuracy with easy-to-use interfaces, making it simple for everyone to stay proactive about their safety online.

(Invited) Shunt-currents in Alkaline Water-Electrolyzers and Renewable Energy

Shunt-currents in bipolar cell stack design with a common electrolyte-feed and -outlet is an inevitable physical phenomenon governed by Ohms law that causes some extra challenges when alkaline water-electrolysers shall operate on renewable energy that is both dynamic and intermittent. Shunt-currents are also referred to as bypass-current or creep-current. The shunt-currents are to much degree governed by the electrolyte inside the cell stack manifold system that transports lye in and out of the cells. The electrolyte inside the manifold system also electrically connects the individual cells together and enables transport of ions/electricity in parallel to the cell stack. Thus, a small portion of the rectifier current is being shunted outside the cells and does not contribute to any production. Previous work on shunt-current modelling brought new insight on how to design the manifolds and raised the awareness on shunt-current and the use of metallic manifolds which both reduced the ohmic resistivity of the manifold system and was a source of secondary electrolysis.Classic alkaline water-electrolysers are typically using an internal manifold system where the inlet ports are located at the bottom of the cell stack and the outlet ports are located at the top, and where the ports connecting the cell-interior and the common manifold channel are short and straight. Such design has in the past worked satisfactory for alkaline water-electrolysers that have been working on a high nominal load and only being shut-down for maintenance a few times over the stack-lifetime, mainly causing a modest reduction in the current efficiency. Membrane-chlorine electrolysers on the other hand, are designed for very small shunt-currents by using an external manifold system, which enables a current protection system that protects electrodes from corrosion under shutdown conditions.Shunt-currents bypassing the cell stack does not contribute to any product and therefore constitutes a loss in current efficiency and, hence, an accordingly loss in the energy efficiency (the shunt-currents still adds to the electricity bill). The atmospheric alkaline electrolyser has a modest loss in current efficiency at nominal load where the high gas volume blocks much of the current path in the rather open outlet ports. The high-pressure alkaline electrolysers on the other hand, where the gas volumes are much smaller, the current efficiency can be as low as 89% at nominal load due to shunt-currents when using simple internal manifold system. For an electrolyser with already low current efficiency at the nominal load, the current efficiency will drop dramatically as the electrolyser is taken to lower load, severely compromising the energy efficiency. The impact on shunt-currents also dramatically increases for increased number of cells in a cell stack, and eventually limits the number of cells that can be assembled in one single cell stack operating on the same common lye system.Shutdown and discharge of the electrodes may further lead to corrosion and degradation of the electrodes, strongly influenced by the shunt-currents and the manifold system. Large cell stacks will discharge faster and deeper, eventually causing corrosion of the electrodes. As the cell stack is discharged the current in the cell stack is reversed where the hydrogen electrode is being polarized to anodic potentials, and the oxygen electrode is polarized to low cathodic potentials which eventually may challenging the material stability. Thus, evaluation of electrode potentials must be an integral part of development of industrial electrodes [LeRoy] and especially in intermittent operation where frequent shutdown will occur. A good integration of the manifold system into the cell stack can potentially mitigate both the loss of current efficiency under dynamic operation and the electrode corrosion under intermittent operation.

MARKET SEEKING OF AMERICA IN MERSIN IN THE LATE OTTOMAN PERIOD

The capitalist economy and industrial revolution developments, dominated the world conjuncture in the 19th century, formed the political infrastructure of European states. The gradual development of production technologies with the industrial revolution caused western countries to search for markets to sell manufactured goods and raw materials to put production Technologies into practice. Commercial firms were marketing their products through intermediary firms or individuals by determining the target market they identified. They run a series of promotional campaigns to make the products or services of companies preferred by people. How these marketing techniques were used by American companies in Mersin, which was a quite new and open port to growth and demand in the late 19th and early 20th centuries, can be found in the letters of American Consulate. The knowledge about the marketing techniques applied by American companies, has been obtained from the letters of the American Consulate. The aim of the study is to reveal how the search for the market in Mersin, port city, which was open to growth in the late 19th century and early 20th century, was carried out by these numerous American companies.

К ВОПРОСУ ОБЕСПЕЧЕНИЯ СЕТЕВОЙ БЕЗОПАСНОСТИ

The following are considered:  principles and means of ensuring the security of a corporate network, as well as features of virtual private networks that provide reliable protection and secure data transmission;  principles and measures to ensure the security of the corporate network, as well as the types of information protection provided by these security measures;  virtual private networks (VPNs) that provide a secure encrypted user connection to the network. Using a VPN provides reliable data protection, masking the user's geolocation, access to regional content and secure data transfer;  systems for detecting and preventing network hacking threats, among which the main focus is on the Kali Linux software package, as well as features of the Windows subsystem for Linux and Windows network monitoring tools;  Windows network monitoring tools, including utilities that work in console command-line mode and allow you to check the availability of remote personal computers and diagnose the connection. The Kali Linux software package is a distribution package for the Linux operating system that has more than 600 preinstalled network penetration testing programs. Among the features of the package, the article discusses the search and exploitation of network vulnerabilities, checking the correct configuration of the SSL certificate and open ports, tracing the data transfer route, checking the availability of servers and searching for network problems.

Adopting Automated Penetration Testing Tools

Modern society is heavily reliant upon the internet. Accordingly, it is vital to ensure that the data transmitted over the internet is safe. Several tools have been created for cybersecurity experts and organizations to test the security levels of organizational networks and websites. However, due to financial constraints, small organizations need to pay closer attention to managing data with limited resources. This study explores the role of automated penetration testing tools in providing small organizations with an effective and affordable data security system. This study employs a case-study approach using multiple data-gathering methods in a charitable organization. More specifically, data was collected using interviews and experiments evaluating penetration testing tools. The results revealed that cost-effective automated penetration testing tools could safeguard small organizations from cybersecurity threats. The penetration testing tools determined that the organization’s website had various vulnerabilities. The Nessus tool discovered no fewer than 37 vulnerabilities on the website application. The ZAP testing tool showed that the website application was critically failing, leading to the accumulation of vulnerabilities. The system had 3 medium-, 12 low-, and 4-informational-risk vulnerabilities. Through the evaluation of open ports, the NMAP tool identified various vulnerabilities. These findings have important implications for small organizations. First, automated penetration testing tools can be easily conducted by small organizations to safeguard their cybersecurity without obtaining costly expert help. Second, it is recommended in the light of the findings that automated penetration testing tools be used in multiple combinations as different tools have unique contributions to cybersecurity.

Kali Linux – a simple and effective way to study the level of cyber security and penetration testing of power electronic devices

The work presents the possibility to use Kali Linux in the process of power electronic devices research, which has not been applied before. Several of the built-in tools of Kali Linux have been used for the purpose of the research. Nmap has been used for vulnerability testing - scanning for open ports and finding out specific, well-known security vulnerabilities by using specific scripts. Wireshark and Burp Suite have been used to find out if the exchanged information is secure or not. hping3 has been used to scan for open ports and generating different TCP DoS attacks, thus studying what is the response of the power electronic device when it is subjected to different TCP DoS attacks – can it be accessed or not, has it experienced any performance violation, etc. Based on the results of this research, it can be argued that Kali Linux is applicable and can be used during the process of power electronic device research.

2F-Authsys: A hyperlocal two-factor authentication system using Near Sound Data Transfer

Two-Factor Authentication (2FA) is a new buzzword in the Information Security world. Big companies that used passwords as an authentication mechanism now have started transitioning to 2FA. One form of two factor authentication is known as One-Time Password (OTP). In today’s time, there is a lack of a secure multi-factor authentication platform which is also user friendly. In all the major 2FA platforms that exist today, the user has to manually enter the OTP from their phone or email. This problem is further amplified by delays in transmission of OTP via email or SMS. There has also been an increase in the number of botnets that scan large networks and try to an open and vulnerable ports on cloud hosting networks. An easy-to-use port security solution is not available. This research work aims to create a secure, proof-of-concept implementation of a modern and opinionated two factor authentication system based on Near Sound Data Transfer (NSDT) technology enabling contactless secure transmission of Time-Based One-Time Password (TOTP).

An Observational Study on Port-site Infection and its Management in Patients Undergoing Laparoscopic Cholecystectomy

Background: With increasing number of performed laparoscopic cholecystectomies, there is an increasing number ,of port site infection, although it occurs infrequently, but it has significant influence on overall outcomes of laparoscopic cholecystectomy. The aims of the present study was to identify the causative organism involved in port-site infection (PSI) and its management and outcome after laparoscopic cholecystectomy objectives and to evaluate causative organism involved in port site infection after laparoscopic cholecystectomy.Materials & Methods: Patients who underwent laparoscopic cholecystectomy and now presenting with PSIin General Surgery OPD and Emergency of Burdwan Medical College and Hospital. Thorough clinical historytaking followed by swabs was taken for culture and sensitivity in all patients who developed port site infection after laparoscopic cholecystectomy. Tissue samples were taken for detection of mycobacterium tuberculosis by CBNAAT. All patients were followed up for 6 months post operatively. Incidence of PSI in relation to gender, pre-operative diagnosis, spillage, relation with different port sites and the type of microorganism associated was evaluated and compared with previous study.Results: In the present study 90 patients who underwent laparoscopic cholecystectomy, 19 patients reported port site infection after surgery, whereas the remaining 71 patients had uneventful post operative period. Out of the 19 infected 7 were male [25% of total male cases] and 12 were female [19% of total female cases]. Cases of port site infection were 21% of total cases. Conclusion: The incidence of PSI was higher in cases of acutely inflamed GB, biliary spillage, open port creation, avoidance of endo-bag, and in comorbidities. They were managed with either antibiotics, dressing or surgical exploration.

Assessment of the meshed screens operability to reduce dust emissions of bulk cargo from the ports open warehouses

Currently, the coal terminals of sea and river ports have a significant negative impact on the environment through their activities. The operation of the terminals technological equipment leads to high concentrations of dust in the air and dust emissions of bulk cargo. The main sources of dust emissions and dust removal are open coal storage warehouses. Recently, dust screens have been used to combat dusting in open coal warehouses and port terminals. However, the processes of wind flows interaction with stacks of port open slads and meshed screens have not been studied enough. In this regard, the purpose of this work is to evaluate in laboratory conditions the operability of meshed screens to reduce the dustiness of the air and the dust emission of bulk cargo during its storage in port open warehouses. During laboratory studies, models of open warehouses stacks are carried out at a certain scale, which allows you to use the full-scale bulk cargo and real meshed screens. The main results of these studies are the following conclusions: meshed screens are workable and effective devices for reducing the speed of wind flow inside the perimeter of the screen; the shape of the stack cross-section does not affect the screen performance; the level of the meshed screen performance to reduce the air dustiness and the amount of dust emission from the warehouses stacks with the different shape of the cross-section depends on the direction and speed of the wind flow. The use of soft meshed screens located along the perimeter of the open coal warehouse stack makes it possible to reduce air dustiness and dust emission at a wind speed of 5 m/s by an average of 1.8 times, and at a wind speed of 10 m/s by an average of 2.5 times.

PERANCANGAN DE-MILITARISED ZONE (DMZ) BERBASIS INTRUSION DETECTION SYSTEM (IDS) PADA INFRASTRUKTUR JARINGAN KOMPUTER PEMERINTAH DAERAH KOTA SUKABUMI

De-Militarized Zone (DMZ) is a mechanism to protect the internal system from attacks by hackers or other parties who want to enter the system without access rights. The internal system is a confidential information system, the DMZ consists of all open ports that can be seen by outside parties so that hackers attack to crack the server that has the DMZ, so the hacker can only access hosts located in the DMZ. This is done so that internet users who can access the server cannot easily access and reach users on the local network. Within a network, hosts are most vulnerable to attacks that provide services to users outside. As computer networks develop in the Sukabumi City Regional Government, implementing a computer network security system model should be the main focus considering that there are many public services with high security risks and also the absence of a security system that can minimize data or application security risks on computer networks.

Accelerating Pharmaceutical Process Development with an Acoustic Droplet Ejection-Multiple Reaction Monitoring-Mass Spectrometry Workflow.

Fast-paced pharmaceutical process developments (e.g., high-throughput experimentation, directed evolution, and machine learning) involve the introduction of fast, sensitive, and accurate analytical assays using limited sample volumes. In recent years, acoustic droplet ejection (ADE) coupled with an open port interface has been invented as a sampling technology for mass spectrometry, providing high-throughput nanoliter analytical measurements directly from the standard microplates. Herein, we introduce an ADE-multiple reaction monitoring-mass spectrometry (ADE-MRM-MS) workflow to accelerate pharmaceutical process research and development (PR&D). This systematic workflow outlines the selection of MRM transitions and optimization of assay parameters in a data-driven manner using rapid measurements (1 sample/s). The synergy between ADE sampling and MRM analysis enables analytical assays with excellent sensitivity, selectivity, and speed for PR&D reaction screenings. This workflow was utilized to develop new ADE-MRM-MS assays guiding a variety of industrial processes, including (1) screening of Ni-based catalysts for C-N cross-coupling reaction at 1 Hz and (2) high-throughput regioisomer analysis-enabled enzyme library screening for peptide ligation reaction. ADE-MRM-MS assays were demonstrated to deliver accurate results that are comparable to conventional liquid chromatography (LC) experiments while providing >100-fold throughput enhancement.

Feasibility studies on deepening Pondicherry Port to accommodate larger vessels explored

A Union territory in India, Pondicherry was a major trading port with the Chinese during the Chola era, having been active since 100 B.C. About 150 km south of Chennai, it was an open roadstead anchorage port. Until the late 1980s, the old port operated as a lighter-age port during French rule, beginning in the 17th century. From 1986 until 1989, the New Port was developed. An offshore (south) breakwater connected to a north breakwater by a bridge makes up the New Port. The channel, which is 2000 meters long and 40 meters broad, was built between 1986 and 1989. It also has a 150-meter container berth. An undersea tunnel has been built between the north and south breakwaters to facilitate maintenance dredging and allow cargo and fishing vessels to pass through without interruption. The port was in use until 2004, when it was shut down for a lack of maintenance dredging. Since 2004, there has been no freight business; only small fishing boats are currently in use. The viability of enhancing Pondicherry Port's current infrastructure to accommodate feeder-class vessels is investigated in this paper.

Iodide oxidation by ozone at the surface of aqueous microdroplets.

The oxidation of iodide by ozone occurs at the sea-surface and within sea spray aerosol, influencing the overall ozone budget in the marine boundary layer and leading to the emission of reactive halogen gases. A detailed account of the surface mechanism has proven elusive, however, due to the difficulty in quantifying multiphase kinetics. To obtain a clearer understanding of this reaction mechanism at the air-water interface, we report pH-dependent oxidation kinetics of I- in single levitated microdroplets as a function of [O3] using a quadrupole electrodynamic trap and an open port sampling interface for mass spectrometry. A kinetic model, constrained by molecular simulations of O3 dynamics at the air-water interface, is used to understand the coupled diffusive, reactive, and evaporative pathways at the microdroplet surface, which exhibit a strong dependence on bulk solution pH. Under acidic conditions, the surface reaction is limited by O3 diffusion in the gas phase, whereas under basic conditions the reaction becomes rate limited on the surface. The pH dependence also suggests the existence of a reactive intermediate IOOO- as has previously been observed in the Br- + O3 reaction. Expressions for steady-state surface concentrations of reactants are derived and utilized to directly compute uptake coefficients for this system, allowing for an exploration of uptake dependence on reactant concentration. In the present experiments, reactive uptake coefficients of O3 scale weakly with bulk solution pH, increasing from 4 × 10-4 to 2 × 10-3 with decreasing solution pH from pH 13 to pH 3.

일본의 동해안 정탐 활동과 원산 개항

Located in Hamgyeong Province on the East Sea coast, Wonsan was the second port to be opened next Busan after Joseon signed ‘The Joseon-Japan treaty of Amity’ in 1876. This area was where the warship Unyo(雲揚艦) conducted reconnaissance activities and contacted local people while moving up along the East Coast at the time of its first visit in June 1875. The voyage log of the warship Unyo clearly reveals the investigation of the environment around Broughton Bay(永興灣), the contempt that they had for the local people, and the contact with the local people. Miyamoto Okazu(宮本小一) also concluded that Wonsanjin should be used as an open port based on his experience in Joseon and the story of an officer aboard the warship Ryuzou(龍 驤艦). Hanabusa Yoshimoto who had been dispatched to Joseon as charge d’affaires since 1877, traveled to and from the coast of Joseon on a warship and negotiated with Joseon officials in areas requiring coal supply stations and open ports. Measuring the coast of Hamgyeong province was carried out in detail through the warship Amagi dispatched to Joseon in 1878. At that time, the perceptions and responses that Joseon local residents and officials had about the activities of the Japanese people can be confirmed through data related to warship Amagi. The opening of Wonsan and the establishment of basic infrastructure were based on the continuous reconnaissance activities of warships sent by the Japanese navy and the collection of information by Japanese army officers. While inspecting the Wonsan area, Japanese merchants first decided on the space in which they would move and the operation policy of the residence. In this article, we looked at the process of opening the port of Wonsan by reviewing various aspects of the Japanese warship’s survey and inspection of the northern coast of Joseon, the response of local residents, and the local inspections and response of Japanese merchants in Busan.

일제강점기 조선신사(朝鮮神社)의 분포 및 입지

This article attempts to grasp the distribution and location trends of Joseon Shinto shrines built during the Japanese colonial period. Joseon Shinto shrines are divided into Shinto shrines(神社) and Shinmyeong shrines(神明神祠) according to their hierarchy. 81 Shinto shrines and 865 Shinmyung shrines were identified in the “Joseon Government-General's Gazette” (1915-1945). For them, the period of completion of the official formalization of the Joseon Shinto shrines (1915-1929) and the period of the Hwangminhwa(皇民化) policy (1930-1945) were divided into two periods, and a distribution map was drawn up. This distribution map overlapped with the railway network built during the Japanese colonial period and was used to identify the distribution trend of the Joseon Shinto shrines. As a result, it can be seen that during the period when the Joseon Shinto Shrine was fully publicized, it was very accessible to the railway network. However, during the period of the Hwangminhwa Policy, the Shinmyeong Shrine spread throughout the country, and its connection with the railway network gradually decreased. This is due to the policy of 'One Myeon(面), One Shrineism' implemented in 1936, Shinmyung Shrines were intensively built up to the myeon region regardless of the railway network. This distribution trend is well seen in Jeollanam-do, Hwanghae-do, and Gyeonggi-do, where many Shinmyung shrines have been built.
 The tendency of the location of Joseon Shinto shrines was examined by dividing them into Shinto shrines and Shinmyeong shrines. To this end, the types of locations were identified at 37 places where symbols and names representing Shinto shrines were displayed in the “Topographic Map of Joseon”. In addition, among them, the visual location of the Shinto shrine was analyzed by selecting 6 places where the location of the Shinto shrine was confirmed by photographs, as well as 6 places of Shinmyeong Shrine found on the “Topographic Map of Joseon”. In the case of Shinto shrines, due to the characteristics of the city where they were built, they were divided into open port cities, transportation cities, and traditional cities. As a result, all of the 12 Joseon Shinto shrines selected as examples are located on hills or in the middle of gentle slopes, securing excellent views. In addition, they were landmarks that could be seen from anywhere in the city, town and myeon because they faced the central place in city, and they were relatively close to Japanese settlements due to their easy access to railway stations. Because of this location, the hill on which the Shinto Shrine was built was designated as a park, and later most of it became a park. This hilly-oriented location of the Joseon Shinto Shrine can be extended to the location tendency of all Joseon Shinto Shrines built during the Japanese colonial period.

High‐throughput mass spectrometry analysis using immediate drop‐on‐demand technology coupled with an open port sampling interface

RationaleThe sampling throughput of immediate drop‐on‐demand technology (I.DOT) coupled with an open port sampling interface (OPSI) is limited by software communication. To enable much‐needed high‐throughput mass spectrometry (MS) analysis capabilities, a novel software was developed that allows for flexible sample selection from a 96‐well plate and for maximized analysis throughput using I.DOT/OPSI‐MS coupling.MethodsWells of a 96‐well I.DOT plate were filled with propranolol solution and were used to test maximum sampling throughput strategies to minimize analysis time. Demonstration of chemical reaction monitoring was done using acid‐catalyzed ring closure of 2,3‐diaminonaphthalene (DAN) with nitrite to form 2,3‐naphthotriazole (NAT). Analytes were detected in positive electrospray ionization mode using selected reaction monitoring.ResultsA maximum throughput of 1.54 s/sample (7.41 min/96‐well plate with three technical replicates) was achieved, and it was limited by the peak width of the MS signal resulting in an occasional slight overlap between the peaks. Relative standard deviation was 10 ± 1% with all tested sampling strategies. Chemical reaction monitoring of DAN to NAT using nitrite was successfully accomplished with 2 s/sample throughout showing almost complete transformation in 10 min with no signal overlap.ConclusionsThis work illustrates the development of a noncontact, automated I.DOT/OPSI‐MS system with improved throughput achieved through an optimized software interface. Its achievable analysis time and precision make it a viable approach for drug discovery and in situ reaction monitoring studies.

Implementation of Port Knocking with Telegram Notifications to Protect Against Scanner Vulnerabilities

The opening of the service port on the Mikrotik router provides an opening for hackers to enter the Mikrotik service to access the router illegally. This research aimed to close certain ports that are gaps for hackers and uses port knocking and telegram bots. The Telegram bot was used as a message notification to managers in real-time to provide information that occurs when the vulnerability scanning process is carried out to find and map weaknesses in the network system. Searching for weaknesses also includes looking for open router service ports such as ports 22, 23, 80, and 8291. This research used the Network Development Life Cycle method, which started from analysis design and prototype simulation to implementation. The research results after testing were able to secure local network service ports against vulnerability scanners on routers using the port knocking method, and testing attack schemes carried out from each scheme could run well on the router’s local network and obtain notifications via telegram bots in real time to administrators. This research contributes to administrators’ ability to secure networks so irresponsible people do not easily infiltrate them.

A Comparative Study of Conventional Transition Model and Reverse Transition Model for Wireless and Radar Applications

Microstrip line-to-waveguide transitions (MLWT) finds various applications in the field of RADAR engineering, navigation science, medical electronics, household equipment, satellite tracking equipment, wireless communications etc. Conventionally, the MLWT is designed so that the microstrip line is inserted in E-plane and perpendicular to the waveguide’s side wall, while the microstrip probe’s radiating face is towards the waveguide’s open end port. In this paper, an MLWT has been designed for Ka-band applications and the transition has been designed in such a way that the radiating face of the inserted microstrip line probe is towards the short circuit end of the waveguide. The method is called the reverse transition method. The microstrip signal reflected from the short circuit end comes in additive phase with the traveling wave and the strength of the traveling wave increases. MLWT has been developed using this method and results for Ka-band applications are presented in this paper. This work reported more than 20 dB improvement in return loss (RL), 0.1dB improvement in insertion loss (IL) and almost 7 to 8% enhancement in 10dB fractional bandwidth compared to the conventional method. Comparative analysis of the two methods has been shown in tabular form at the end of the paper.