Terms Of Current Technology Research Articles

Construction of Fishing Vessel Molding with A Case Study of Ship Objects for The Java South Sea Region

In the process of building fiberglass boats (FRP), mold or molding is needed to make the hull and superstructure. Molding can be made of several kinds of main constituent materials including steel, wood, aluminium, HDPE and others. The object of the case study was carried out by collecting data from existing ships at the South Coast of the Java Sea. Molding is the main means in the fabrication process for fiberglass boats. To find out how long the mold or molding can be used, a service life analysis is needed. In terms of current technology, the analysis method uses structural fatigue analysis or fatigue analysis. In the calculations, the design is carried out earlier by conducting modelling simulations. In the fatigue analysis of the molding structure, material data is required to be applied to the molding. This will provide input data at the preprocessing stage in the finite element method. Furthermore, if the lifetime results are known at the age of the mold, then it can be continued with making the fishing boat molding product. So that later it can provide an illustration for shipbuilders that the time or age of the mold can be used for the time that has been designed.

Double-direction cyclic controlled quantum communication of single-particle states

The purpose of this paper is to investigate the double-direction cyclic (DDC) controlled quantum communication of single-particle states. We construct 13-particle, 19-particle and 16-particle entangled channels via Hadamard gates and controlled-NOT gates, separately. Based on these quantum channels that we construct, three novel theoretical schemes are proposed for achieving four-party DDC controlled quantum teleportation (QT), remote state preparation (RSP) and hybrid quantum communication, respectively. For any of these three schemes, each correspondent can simultaneously teleport two different single-particle states to two other correspondents under the control of the supervisor, which ensures that cyclic controlled quantum communication is implemented simultaneously in both clockwise and anticlockwise directions. Furthermore, the three presented four-party schemes for DDC controlled quantum communication can be extended to scenarios with n (n>3) correspondents. In each of our schemes, the general analysis formulas for both the sender’s manipulations and the receiver’s transformations are respectively given, and the unit success probability of each scheme is achieved. This article requires specific two-particle projective measurement, single-particle von Neumann measurement, Hadamard gate, controlled-NOT gates and Pauli gates, so our schemes can be physically implemented in terms of current technologies. We also analyzed the inherent efficiency, safety, and control power of the proposed schemes, and the results showed that our schemes are good.

Metabolomics in oncology.

Oncogenic transformation alters intracellular metabolism and contributes to the growth of malignant cells. Metabolomics, or the study of small molecules, can reveal insight about cancer progression that other biomarker studies cannot. Number of metabolites involved in this process have been in spotlight for cancer detection, monitoring, and therapy. In this review, the "Metabolomics" is defined in terms of current technology having both clinical and translational applications. Researchers have shown metabolomics can be used to discern metabolic indicators non-invasively using different analytical methods like positron emission tomography, magnetic resonance spectroscopic imaging etc. Metabolomic profiling is a powerful and technically feasible way to track changes in tumor metabolism and gauge treatment response across time. Recent studies have shown metabolomics can also predict individual metabolic changes in response to cancer treatment, measure medication efficacy, and monitor drug resistance. Its significance in cancer development and treatment is summarized in this review. Although in infancy, metabolomics can be used to identify treatment options and/or predict responsiveness to cancer treatments. Technical challenges like database management, cost and methodical knowhow still persist. Overcoming these challenges in near further can help in designing new treatment régimes with increased sensitivity and specificity.

Assessing the effects of wind farms on soil organic carbon.

Wind energy is considered one of the cleanest and most sustainable resources among renewable energy sources. However, several negative environmental impacts can be observed, unless suitable sites are selected for the establishment of wind farms. The aim of this study is to determine the change in the soil organic carbon (SOC) stock resulting from land cover changes that were caused by wind farm establishments in the Karaburun peninsula. Within the scope of the study, remote sensing and geographic information system technologies were utilized. Maximum likelihood algorithm, one of the supervised classification techniques, was used to classify the land cover, and Normalized Difference Vegetation Index (NDVI) analyses were performed to determine land cover changes. The findings were correlated with the "Turkey Soil Organic Carbon Project" data. As a result, depending on the establishment of wind farms in the Karaburun Peninsula, a total decrease of 18,330.57tons of SOC in the study area between 2000 and 2019 was determined. It should be taken into consideration that besides many other negative effects (effects on human health, effects on the ecosystem, effects on animals, etc.), land cover changes caused by wind farms may indirectly cause important problems such as climate change. Recently, this situation shows that there is an important dilemma in terms of current implementations. Wind farms are the most invested renewable energy sources and alternative energy supply to fossil fuels in terms of preventing climate change. However, the results of this study have reviewed that lack of proper approaches and methods to establish wind farms may result in various problems such as physical, chemical, and biological degradations and an increase in the amount of atmospheric carbon. Consequently, the investments in renewable energy sources should be comprehensively reevaluated in terms of current technologies, quality in the scope of environmental impact assessment and strategic environmental assessment processes, legal regulations and national policies, long-term environmental costs, etc.

COVID-19: benefits and risks of passive immunotherapeutics

ABSTRACT Passive immunotherapeutics (PITs), including convalescent plasma, serum, or hyperimmune immunoglobulin, have been of clinical importance during sudden outbreaks since the early twentieth century for the treatment of viral diseases such as severe acute respiratory syndrome (SARS), middle east respiratory syndrome (MERS) and swine flu (H1N1). With the recent SARS-CoV-2 pandemic, wherein effective antivirals and vaccines are still lacking, an interest in convalescent plasma therapy as a lifesaving option has resurfaced due to its capacity for antigenic neutralization and reducing viremia. This review summarizes convalescent blood products (CBPs) in terms of current technologies and the shortcomings related to the collection, manufacture, pathogen inactivation, and banking of CBPs, with a specific focus on their plausible applications, benefits, and risks in the COVID-19 pandemic.

The application of solar technologies in building energy efficiency: BISE design in solar-powered residential buildings

At present, building energy consumption is growing rapidly in China and it accounts for about 30% of the total energy consumption. Solar energy, as a type of renewable energy, will greatly alleviate the pressure of the building energy consumption if it is widely used in residential buildings. Firstly, this paper briefly introduced the characteristics and distribution of solar energy resources in China. Secondly, this paper summarized the three types of solar energy utilization: light-gathering utilization, solar energy photo-thermal utilization and photovoltaic utilization. Among them, photo-thermal technology is suitable for solar-powered residential buildings (SPRBs) in terms of current technology and economy. Thirdly, authors analyzed the passive SPRBs and active SPRBs, where the active SPRBs are more intelligent due to its flexibility and controllability. Based on the above analysis, to realize the harmony between solar technologies and building appearance, authors put forward building integrated solar energy (BISE) design in the consideration of technology and aesthetics. The development and application of solar technologies in residential buildings embodies the concepts of energy conservation, environmental protection and sustainable development, and it will promote the development of building energy efficiency.

Technology Focus: Subsea Technology (August 2013)

Technology Focus My, what a difference a year makes as I look back at last year’s interest vs. this year’s. Improved-oil-recovery (IOR) technology and remotely-operated-vehicle support were in the forefront last year. This year, the buzz is around high pressure/high temperature (HP/HT). This is not to say that IOR technology has vanished or become passé; far from it. But this year’s group of papers heralds a technical sense of urgency to focus on tougher long-term basic science and research rather than quick-return near-term application engineering projects. HP/HT has been simmering as a long-term technical concern for the last 8 years. But HP/HT is a tough nut to crack, needing a lot of research-and-development funding for basic research that is only starting to show long-term benefits from understanding. This urgency is being fueled by industry, which is increasingly uncovering its own shortcomings in terms of current technology as it encounters new, challenging sources of hydrocarbons in deepwater, shale, and heavy-oil formations. Many of this year’s HP/HT technical papers reflect the progress of efforts and the urgency to solve remaining barriers in Fundamentals in design methodology, from simple 1D pressure-containing and -controlling designs and codes to multidimensional complex loading (combined pressure, temperature, tensions, and moments) combinations. These combinations are often beyond a single existing design code and will require new practices that combine several codes and methods to create a hybrid code that both industry and government can use. Material and fabrication hurdles, including lack of material properties at elevated temperatures, joining and seal technology that is far more rigorous and exacting than what the industry currently employs, and higher strength/hardness vs. ductility/toughness. The latter are two material/fabrication properties that are often diametrically opposed, but they need to be merged for the material to survive extreme sour HP/HT conditions. Predicting design life, from static maximum-load design criteria to addressing random cyclic loads (internally and externally), and how we monitor these predicted loads to determine the remaining life through in-situ sensing equipment. Clearly, this year’s crop of subsea technical papers reflects the heightened interest in HP/HT while still recognizing continued advances in IOR technology. Recommended additional reading at OnePetro: www.onepetro.org. OTC 24057 Design and Verification of High-Load-Bearing Interfaces by Nigel McKie, FMC Technologies, et al. OTC 24150 Composite-Reinforced Steel Drilling Riser for Ultradeepwater High-Pressure Wells by C.A. Cederberg, Hexagon Lincoln, et al. IPTC 16796 Flow-Assurance Study for a Subsea Production System With a Large-Scale Seabed Storage by Juneyoung Kim, KAIST, et al. OTC 23968 Large-Diameter-Riser Laboratory Gas Lift Tests by G. Zabaras, Shell, et al. OTC 24021 Wellbore Thermal Performance and Its Impact on Flow-Assurance Design of a Subsea Production System by Leon Liu, Intecsea, et al. OTC 24052 Subsea-Pipeline Repair by Composite System: One Step Deeper by S. Boulet d’Auria, 3XEngineering, et al.

Evaluation of a proposed optimization method for discrete-event simulation models

Optimization methods combined with computer-based simulation have been utilized in a wide range of manufacturing applications. However, in terms of current technology, these methods exhibit low performance levels which are only able to manipulate a single decision variable at a time. Thus, the objective of this article is to evaluate a proposed optimization method for discrete-event simulation models based on genetic algorithms which exhibits more efficiency in relation to computational time when compared to software packages on the market. It should be emphasized that the variable's response quality will not be altered; that is, the proposed method will maintain the solutions' effectiveness. Thus, the study draws a comparison between the proposed method and that of a simulation instrument already available on the market and has been examined in academic literature. Conclusions are presented, confirming the proposed optimization method's efficiency.