Initial Comparison Research Articles

Comparison of fragrance and flavor components in non-psilocybin and psilocybin mushrooms using vacuum-assisted headspace high-capacity solid-phase microextraction and gas chromatography–mass spectrometry

Vacuum-assisted headspace high capacity solid-phase microextraction (Vac-HS-HC-SPME) coupled with gas chromatography–mass spectrometry (GC–MS) was used to compare the volatile compounds that make up the volatile and semi-volatile components of five psilocybin mushrooms (Psilocybe cubensis), as well as three non-psilocybin mushroom species. Using an untargeted analysis, common volatiles detected consisted of acids, alcohols, aldehydes, ketones, and hydrocarbons. The initial comparison of Vac-HS-HC-SPME and HS-HC-SPME conditions showed 2 times increase in compound response as well as the detection of 8 additional compounds undetected by HS-HC-SPME. Compounds unique to psilocybin mushrooms were 2-methylbutanal, valeraldehyde, benzaldehyde, 3-octen-2-one, 2-methyl-dodecane, and 2‑butyl‑2-octenal. Compounds unique to non-psilocybin mushrooms were 2-methyl-pyrazine, 2,3-butanediol, butyric acid, butyrolactone, benzyl alcohol, 2-pyrrolidinone, and estragole. The commonly shared compound, 1-octen-3-ol, was shown to have a higher compound response among the psilocybin mushroom species.

Связь уровней галектина-3 и мозгового натрийуретического пептида с типом ремоделирования левого желудочка у пациентов с ишемической болезнью сердца после аорто-коронарного шунтирования

Relevance. Today, the search for biomarkers capable of predicting the duration of rehabilitation after CABG in patients with CAD is relevant. Aim. To assess the features of the left cardiac chamber remodeling with regard to the levels of NT-proBNP and galectin-3 in patients with CAD after CABG. Methods. The study involved 100 males with CAD, who underwent CABG. Group 1 included 58 patients, who started working within 4 months after intervention. Group 2 included 42 patients, whose rehabilitation period exceeded 4 months. Echocardiography was performed in all patients, the levels of galectin-3, NT-proBNP were determined 1 and 4 months after CABG. Results. Assessment of the LV remodeling variants 1 month after CABG showed that hypertrophic variants of remodeling prevailed in group 2, while in group 1 these were reported less than in half of the cases. The increase in the rate of unfavorable LV remodeling variants by month 4 was observed in group 2. Initial comparison showed that the galectin-3 and NT-proBNP levels in group 2 were significantly higher than that in group 1 (17.95 (17.2÷19.3) vs. 11.35 (8.2÷14.7) ng/mL, p<0.01 and 372 (320.3÷445) vs. 287.5 (232.5÷391.3) pg/mL, p<0.01, respectively). These indicators showed no upward trend by month 4 in group 1, while in group 2 a significant increase in the levels of galectin-3 and NT-proBNP was reported. Positive correlations of varying strength between the galectin-l levels and the LV remodeling types, NT-proBNP levels and the LV remodeling types were revealed in both groups. Discussion. The association of high marker (galectin-3 and NT-proBNP) levels with unfavorable LV remodeling types in the group with prolonged recovery was demonstrated during the study. The studied markers are proxy indicators for the processes underlying maladaptive morphofunctional remodeling of myocardium resulting in myocardial dysfunction, which can be the cause of prolonged recovery after the CABG surgery. Conclusions. The correlations revealed can have clinical significance for early detection of LV remodeling in patients with CAD associated with prolonged recovery after CABG.

Research on the Outgoing Audit and Evaluation of Water Resource Assets of Leadership Cadres in City Y

The outgoing audit of water resource assets of leading cadres is key to promoting the management of water resource assets and investigating the responsibility for water environment damage. This paper is based on the United Nations’ Sustainable Development Goals related to water resource management and natural asset green accounting. It constructs an evaluation index system for the outgoing audit and evaluation of water resource assets from four dimensions: resource, environment, society, and economy. The paper combines the Analytic Hierarchy Process (AHP) and the initial comparison scoring method to comprehensively assess the water resource management performance of the former mayor of City Y in the Yellow River Basin during 2018–2020. The Barrier Degree Model is also utilized to identify the main influencing factors. The results indicate the following: (1) the constructed index system covers critical aspects of the outgoing audit and can comprehensively reflect the leadership cadres’ responsibilities in water resource management. (2) The comprehensive evaluation score of the former mayor of City Y during 2018–2020 is 85.66, falling within the “relatively good” range but not reaching the “excellent” standard. This suggests that, although progress has been made in water resource asset management, some issues remain. (3) At the index level, the top three factors influencing the comprehensive evaluation of the former mayor’s water resource management performance in City Y are the proportion of ammonia nitrogen emissions (9.86%), per capita water resource (9.38%), and Chemical Oxygen Demand (COD) emissions (8.93%). At the criterion level, the environmental dimension has the most significant impact on the overall evaluation results, accounting for 42.43%. The practical application of the evaluation index system in City Y can serve as a reference for improving the regulatory framework for leadership cadres’ water resource assets in other regions and provide valuable insights for international exchange in water resource management practices.

Developing Versatile Contactors for Direct Air Capture of CO2 through Amine Grafting onto Alumina Pellets and Alumina Wash-Coated Monoliths.

The optimization of the air-solid contactor is critical to improve the efficiency of the direct air capture (DAC) process. To enable comparison of contactors and therefore a step toward optimization, two contactors are prepared in the form of pellets and wash-coated honeycomb monoliths. The desired amine functionalities are successfully incorporated onto these industrially relevant pellets by means of a procedure developed for powders, providing materials with a CO2 uptake not influenced by the morphology and the structure of the materials according to the sorption measurements. Furthermore, the amine functionalities are incorporated onto alumina wash-coated monoliths that provide a similar CO2 uptake compared to the pellets. Using breakthrough measurements, dry CO2 uptakes of 0.44 and 0.4 mmol gsorbent-1 are measured for pellets and for a monolith, respectively. NMR and IR studies of CO2 uptake show that the CO2 adsorbs mainly in the form of ammonium carbamate. Both contactors are characterized by estimated Toth isotherm parameters and linear driving force (LDF) coefficients to enable an initial comparison and provide information for further studies of the two contactors. LDF coefficients of 1.5 × 10-4 and of 1.2 × 10-3 s-1 are estimated for the pellets and for a monolith, respectively. In comparison to the pellets, the monolith therefore exhibits particularly promising results in terms of adsorption kinetics due to its hierarchical pore structure. This is reflected in the productivity of the adsorption step of 6.48 mol m-3 h-1 for the pellets compared to 7.56 mol m-3 h-1 for the monolith at a pressure drop approximately 1 order of magnitude lower, making the monoliths prime candidates to enhance the efficiency of DAC processes.

Aggregated Molecular Phenotype Scores: Enhancing Assessment and Visualization of Mass Spectrometry Imaging Data for Tissue-Based Diagnostics.

Mass spectrometry imaging (MSI) has gained increasing popularity for tissue-based diagnostics due to its ability to identify and visualize molecular characteristics unique to different phenotypes within heterogeneous samples. Data from MSI experiments are often assessed and visualized using various supervised and unsupervised statistical approaches. However, these approaches tend to fall short in identifying and concisely visualizing subtle, phenotype-relevant molecular changes. To address these shortcomings, we developed aggregated molecular phenotype (AMP) scores. AMP scores are generated using an ensemble machine learning approach to first select features differentiating phenotypes, weight the features using logistic regression, and combine the weights and feature abundances. AMP scores are then scaled between 0 and 1, with lower values generally corresponding to class 1 phenotypes (typically control) and higher scores relating to class 2 phenotypes. AMP scores, therefore, allow the evaluation of multiple features simultaneously and showcase the degree to which these features correlate with various phenotypes. Due to the ensembled approach, AMP scores are able to overcome limitations associated with individual models, leading to high diagnostic accuracy and interpretability. Here, AMP score performance was evaluated using metabolomic data collected from desorption electrospray ionization MSI. Initial comparisons of cancerous human tissues to their normal or benign counterparts illustrated that AMP scores distinguished phenotypes with high accuracy, sensitivity, and specificity. Furthermore, when combined with spatial coordinates, AMP scores allow visualization of tissue sections in one map with distinguished phenotypic borders, highlighting their diagnostic utility.

Initial comparison of pollen counting methods using precipitation and ambient air samples and automated artificial intelligence to support national monitoring objectives

Initial comparison of pollen counting methods using precipitation and ambient air samples and automated artificial intelligence to support national monitoring objectives

Telling Personal Narratives: Comparing Stories Told by 10-Year-Old Speakers of Cypriot Greek Dialect and of Standard Modern Greek

Introduction: Cypriot Greek is the variety of Greek language used for oral communication by the Greek Cypriot people, while Standard Modern Greek is the official language. Cypriot Greek differs from Standard Modern Greek in various aspects, including lexicon, phonetics, phonology, morphosyntax, and pragmatics. This study examines whether there are differences between children who are native speakers of the Cypriot Greek dialect and those who are native speakers of Standard Modern Greek in narrative measurements obtained in a personal narrative context. Methods: Thirty-nine ten-year-old children (19 Cypriot Greek speakers and 20 Standard Modern Greek speakers) participated in the study. The Global TALES protocol was used to elicit personal narratives across 6 emotion-based prompts. Measures of microstructure (mean length of utterance, number of different words) and macrostructure (plot elements) are examined. Results: Analysis showed no differences in macrostructure between Cypriots Greek speakers and Standard Modern Greek speakers in response to the prompts. In contrast, group differences were found in syntactic complexity, with the Standard Modern Greek speakers producing longer sentences. Conclusion: This is the first study to compare the characteristics of personal narratives spoken by 10-year-old children who are speakers of Cypriot Greek and Standard Modern Greek. The results from this initial comparison highlight that children who are speakers of two varieties of the same language share similar narrative elements. However, they may differ in their linguistic profiles, such as in syntax. Understanding these differences is important for researchers, educators, and speech therapists. A detailed understanding of developmental milestones and a clear understanding of each variety’s characteristics are crucial from a research, pedagogical, and speech therapy perspective.

Spire RO Thermal Profiles for Climate Studies: Initial Comparisons of the Measurements from Spire, NOAA-20 ATMS, Radiosonde, and COSMIC-2

Global Navigation Satellite System (GNSS) Radio Occultation (RO) data play an essential role in improving numerical weather prediction (NWP) and monitoring climate change. The NOAA Commercial RO Purchase Program (CDP) purchased RO data provided by Spire Global Inc. To ensure the data quality from Spire Global Inc. is consistent with other RO missions, we need to quantify their accuracy and retrieval uncertainty carefully. In this work, Spire Wet Profile (wet temperature profile) data from 7 September 2021 to 31 October 2022, processed by the University Corporation for Atmospheric Research (UCAR), and COSMIC-2 (Constellation Observing System for Meteorology, Ionosphere, and Climate-2/Formosa Satellite Mission 7) data are evaluated through comparison with NOAA-20 Advanced Technology Microwave Sounder (ATMS) microwave sounder measurements and collocated RS41 radiosonde measurements. Through the Community Radiative Transfer Model (CRTM) simulation, we convert the Spire and COSMIC-2 RO retrievals to ATMS brightness temperature (BT) at sounding channels CH07 to CH14 (temperature channels), with weighting function peak heights from 8 km to 35 km, and CH19 to CH22 (water vapor channels), with weighting function peak heights ranging from 3.2 km to 6.7 km, and compare the simulations with the collocated NOAA-20 ATMS measurements over ocean. Using ATMS observations as references, Spire and COSMIC-2 BTs agree well with ATMS within 0.07 K for CH07-14 and 0.20 K for CH19-22. The trends between Spire and COSMIC-2 are consistent within 0.07 K/year over the oceans for ATMS CH07-CH13 and CH19-22, indicating that Spire/COSMIC-2 wet profiles are, in general, compatible with each other over oceans. The RO retrievals and RS41 radiosonde observation (RAOB) comparison shows that above 0.2 km altitude, RS41 RAOB matches Spire/COSMIC-2 temperature profiles well with a temperature difference of <0.13 K, and the trends between Spire and COSMIC-2 are consistent within 0.08 K/year over land, indicating that Spire/COSMIC-2 wet profiles are overall compatible with each other through RS41 RAOB measurements over land. In addition, the consistency of Spire and COSMIC-2 based on different latitude intervals, local times, and signal-to-noise ratios (SNRs) through ATMS was evaluated. The results show that the performance of Spire is comparable to COSMIC-2, even though COSMIC-2 has a higher SNR. The high quality of RO profiles from Spire is expected to improve short- and medium-range global numerical weather predictions and help construct consistent climate temperature records.

Feasible options for point-to-point passenger transport with rocket propelled reusable launch vehicles

For the first time in spaceflight history the flight of a fully reusable launch system with rocket propulsion appears possible within the next couple of years. Apart from the implications for the orbital launch market, a fully reusable system could also enable an entirely new class of commercial point-to-point transport on Earth. Rocket propelled point-to-point systems promise the ability to transport passengers or cargo to any suitable landing site on Earth with extremely short travel times (typically less than 90 min). In this study the primary focus is on DLR-SART's SpaceLiner 7 vehicle concept with an initial comparison to Starship, currently being developed by SpaceX.The trajectories are identified using multi-objective optimization with evolutionary algorithms. These allow the identification of a solution space with regard to multiple objectives, in this case minimal overflight of populated areas and minimal peak heat flux, while still respecting other constraints (e.g. structural loads). The population disturbance is computed by using a global population density database and integrating the number of people along the flight track. Ideally, the solution space consists of a pareto-front which correlates to the most optimal solutions possible for all objectives.The mission analysis identifies various feasible trajectories around the world. Primarily, these routes are going along less populated areas such as the oceans and the polar regions. Especially the latter enable large longitudinal changes during the flight and consequently connecting distant places on Earth. The critical routes are large longitudinal crossings around the equator where land masses must be overflown. These shall be reconsidered and/or improved in the future.Comparing SpaceLiner to Starship, it is found that the mission profiles vary significantly. While SpaceLiner uses its high lift-to-drag ratio in the higher atmosphere to manoeuvre around large land masses, Starship can only follow the direct route. In contrast, Starship flies higher into space and thereby might avoid having large population disturbances on ground. Only the re-entry and landing are critical as it does not have significant cross range capability. As a design option for the next iteration of the SpaceLiner development, SpaceLiner 8, it is planned to assess the possibility of using a smaller wing to follow a similar coast through space like Starship and have a steep re-entry at the end of the flight instead of a prolonged glide.

Does Online Social Support Uniquely Buffer Effects of Stress During the COVID-19 Pandemic?: A Natural Experiment.

In-person sources of social support buffer effects of stress on mental health. However, online social support inconsistently demonstrates stress-buffering effects. Highly stressful circumstances, such as the first month of COVID-19 lockdown, may be necessary to benefit from support received from online networks. We investigated whether online support demonstrated an increased stress-buffering effect on depressive symptoms during the first month of COVID-19 lockdown. We collected cross-sectional data on three distinct groups of participants from February to April 2020-preceding lockdown (pre-COVID; n = 53), up to four weeks following university closures (initial lockdown; n = 136), and the final weeks of the semester (later lockdown; n = 127). Initial lockdown participants reported significantly more stress than pre-COVID but not later lockdown participants. The online social support by stress by COVID phase interaction was only significant for the initial versus later lockdown comparison. Online support buffered stress during initial lockdown but not later lockdown. Stress-buffering effects of offline support were observed and did not depend on COVID phase. Online support may only buffer stress when stress is heightened and offline support is less available.

Research Note: Preliminary assessment of the impact of dietary yeast products on egg production and cecal microbial profiles of laying hens

The objective of the current study was to conduct an initial comparison of commercial yeast products in layer hen diets on egg production parameters and the corresponding impact on the cecal microbiota. A short-term feeding study was conducted with 35 laying hens receiving either a control, or 1 of 4 different yeast fermentation products, Immunowall, Hilyses (both from ICC, São Paulo, Brazil), Citristim (ADM, Decatur, IL), and Maxi-Gen Plus (CBS Bio Platforms, Calgary, Canada) with 7 hens per treatment from 40 to 46 wk of age. At the end of the trial, hens were euthanized, the ceca removed and prepared for denatured gradient gel electrophoresis (DGGE) microbial compositional analyses. Although initial shell weight and shell thickness were similar among the treatment groups, hens fed Hilyses had lower shell weight and thickness at the end of the experiment. The most predominant DGGE bands with the strongest intensity were identified as Lactobacillus species and excised double bands were identified as Bacillus, Clostridium, or Lachnospiraceae. In this short-term feeding trial, the commercial yeast products tested had little effect on egg production and shell quality, and only moderately impacted the composition of mature layer hen cecal microbiota.

Effectiveness of chlorhexidine diacetate and povidone-iodine in antiseptic preparation of the canine external ear canal prior to total ear canal ablation with bulla osteotomy procedure: A preliminary study.

This article is a preliminary study to compare the ability of 0.05% chlorhexidine diacetate (CD) and 1% povidone-iodine (PI) solutions to reduce bacterial contamination on the canine external ear canal during initial patient preparation and comparison of the incidence of immediate tissue reactions. The study is a multi-institutional, randomised, clinical prospective study. Dogs (n = 19) undergoing total ear canal ablation with bulla osteotomy (TECABO). The external ear of each dog was cleaned with the assigned antiseptic solution. Culture of the ear was performed by standard techniques to semi-quantitatively evaluate bacterial growth and to identify bacterial organisms pre- and post-antiseptic use. Both antiseptic groups showed a significant reduction in bacterial growth score (BGS) between pre- and post-antiseptic use (CD p = 0.009, PI p = 0.005). There was no difference in the reduction of BGS between CD and PI solutions (p = 0.53). Minor adverse skin reactions occurred in 25% of cases. There was no significant difference in the occurrence of adverse skin reactions between antiseptics (p = 0.63). CD and PI were similarly able to decrease the number of bacteria on the external ear following initial preparation. No difference in the incidence of adverse tissue reactions was found. Properly diluted aqueous formulations of either antiseptic may be used for safe preparation limited to the external ear canal of dogs. Additional studies evaluating outcomes such as duration of bacterial inhibition and incidence of surgical site infections are needed to fully elucidate differences between CD and PI antiseptics prior to TECABO.

Subindividual variability in sea pens (Octocorallia: Pennatulacea)

Comparisons between plants and sessile modular colonial invertebrates offer interesting parallelisms between plant and animal body plans after millions of years of divergent evolution. Among these parallelisms might be the existence and distribution of intraindividual heterogeneity in organ traits, also named subindividual variability. Subindividual variability is quantitatively important and has many consequences for plant individuals, populations and communities, and for animal consumers as well. However, could a similar process of subindividual variability occur in sea pens, which have a modular architecture similar to that of plants? In the literature of marine invertebrates very little is known about the presence and magnitude of subindividual variability in modular organisms. This study provides for the first time a quantitative assessment of subindividual variability in sea pens, analysing certain biometric features of reiterated structures that presumably have some ecological function, and offers an initial comparison of quantitative levels of subindividual variation between plants and sea pens.

Circular economy initiatives are no guarantee for increased plastic circularity: A framework for the systematic comparison of initiatives

Plastic plays a prominent role within circular economy, with many stakeholders promoting initiatives to increase plastic circularity during the manufacturing, use and end-of-life phases. Despite well-meant intentions, many initiatives are characterized by a lack of compliance with basic circular economy principles, implementation barriers, and limited effects on the intended long-term plastic circularity. This study provides a systematic evaluation framework for comparison of plastic initiatives, based on 17 criteria addressing key aspects of plastic circularity. A three-level likelihood ranking approach is applied to analyse the impact of 54 initiatives targeting plastic circularity in a European context. It was found that relatively few of these initiatives were readily implementable without considerable investments, e.g. in new waste management and recycling technologies, and changes in plastic production and product design. The results clearly suggest that current suggestions for circular economy initiatives targeting plastic may have limited effect and not lead to the intended impacts without the support of new regulations and change in plastic demand and consumption. The study stresses the importance of synergies and cooperation between stakeholders across the value chain to reach plastic circularity. The framework offers a consistent basis for decision-makers to identify critical barriers and enablers in relation to plastic circularity characteristics, but the approach may also be applied to other topic areas.

Homelessness and predictors of criminal reoffending: A retrospective cohort study.

There are not many longitudinal studies examining people experiencing homelessness and interacting with the criminal justice system over time. To describe the type of criminal offences committed, court outcomes, identify probable predictors of reoffending, and estimate the criminal justice costs in a cohort of homeless hostel clinic attendees. A retrospective cohort study of 1646 people attending a homeless clinic who had had contact with the criminal justice system (CJS) in New South Wales (NSW), Australia, using linked clinic, criminal offence, health and mortality data from 1 July 2008 to 30 June 2021. Initial comparisons were made with the 852 clinic attendees without CJS contact in the period. Multivariable logistic regression was used to identify predictors of recidivism. There were 16,840 offending episodes, giving an offence rate of 87.8 per 100 person-years (95%CI: 86.5-89.1). The most common index offences were acts intended to cause injury (22%), illicit drug (17%) and theft-related (12%) offences. Most people (83%) were found guilty of the index offence and received a fine (37%) or community-based sentence (29%). Total court finalisation costs were AUD $11.3 million. Three-quarters of those convicted reoffended within 24months. Offenders were more likely to be younger, have a diagnosis of personality disorder (AOR: 1.31; 95% CI: 1.04-1.67), a substance use disorder (AOR: 1.60; 95% CI 1.14-2.23) and/or to have a previous charge dismissed on mental health grounds (AOR: 1.79; 95% CI: 1.31-2.46). Within the offending cohort, reoffenders had almost twice the odds of having theft-related offences as their principal index offence (AOR: 1.85; 95% CI: 1.29-2.66). This longitudinal study finding of not only a high rate of criminal justice contact, but also a high rate of recidivism among people who have been homeless, lends support to a need for strategies both to address the root causes of homelessness and to provide a comprehensive systems-based response to reduce recidivism, that includes secure housing as well as mental health and substance use treatment programmes for homeless offenders.

A New Palaeolithic Giant Handaxe from Britain: Initial Results from Excavations at Maritime Academy, Medway, Kent

This paper will present initial results from excavations at Maritime Academy, Frindsbury which produced several handaxes, two of which can be classed as ‘giant handaxes’. Artefacts were recovered from fluvial deposits in the Medway Valley and are thought to date from the Marine Isotope Stage 9 interglacial. This paper will focus on the largest of these handaxes and will present metrical data for the artefact and initial comparison with similar artefacts from the British Palaeolithic.

COVID-19 SEVERITY PREDICTION USING DEEP LEARNING MODELS – COMPARATIVE STUDY

In response to the exponential rise in COVID19 instances, healthcare professionals have been seeking for strict automated detection measures to stop COVID from spreading while simultaneously attempting to restrict device processing needs. Additionally, we must comprehend the severity of the COVID infection based on the harm the infection has done to the lungs to properly treat impacted individuals. We choose a suitable CNN model as a result after performing an initial comparison analysis of many well-known CNN models. Using a dataset generated from sources like prior papers and other internet resources, this study provides an ensemble model that is exact and effective and is built on deep learning Convolutional Neural Networks (CNN). The dataset is altered in several ways to boost its accuracy. To choose the optimal deep-learning model for our application, we are performing a comparative study. We assessed the benefits and drawbacks of many commercial CNN models, including VGG16, VGG19, and Densenet 121. To select the optimal model for provided dataset, the accuracy comparative study is constructed. VGG16 model had highest accuracy, coming in at 82.46 %. The study was conducted to determine the optimum way for our multi-modal picture classification, which, with a little modification, functions well, rather than to accurately assess how well each method did.

In response to the exponential rise in COVID19 instances, healthcare professionals have been seeking for strict automated detection measures to stop COVID from spreading while simultaneously attempting to restrict device processing needs. Additionally, we must comprehend the severity of the COVID infection based on the harm the infection has done to the lungs to properly treat impacted individuals. We choose

AI has been used in marketing for decades, long before the term “AI” even existed. From providing valuable insights into customer behaviors to automating processes, AI has revolutionized the way marketers do business. But how effective is AI in digital marketing? Is it worth investing in a machine learning platform? In this paper, we will take a look at the advantages and disadvantages of using AI in digital marketing and explore the potential of this technology. This is also one of the first few initiatives to study the effect of AI applications on the sales data of real time businesses.

Correlation of H- beam properties to Cs-coverage

A caesiated RF driven source delivers H- ions that, after stripping at the end of the 160 MeV H- linear injector, provides protons to CERN's accelerator complex including LHC, where the protons reached a record energy of 6.8 TeV. In Caesiated RF sources, H- ions are produced via dissociative attachment of electrons onto roto-vibrationally excited H2-molecules (volume) and re-emission as negative ions of protons or hydrogen atoms colliding on a low work function caesiated molybdenum plasma electrode (surface). During initial caesiation, the production mechanism evolves from the initial Cs-free volume production to a predominant surface production mode; the observed stunning reduction of co-extracted electrons is concomitant to an increase of the H- ion current to RF-power yield. This paper describes the evolution of the beam-profile at today's operational beam intensities of 35 mA for various ratios of volume and surface ion-origin. The presence of surface produced ions occurring on a conical plane is characterized by the electron to ion ratio and by measurement of the Cs-coverage of the molybdenum plasma electrode down to a fraction of a monolayer. Angular distributions are extracted from beam profile and Beam Emission Spectroscopy (BES) measurements. These experimental results provide an initial comparison to beam formation simulation that, at a later stage, could be coupled to beam transport software packages.The paper focuses on the caaesiation transient to present experimental evidence for 3D beam formation studies, it provides insight into the mixing of volume and surface production modes, reduction of co-extracted electrons and Cs-coverage. The paper also establishes magnetic field induced asymmetries in the beam's current density.

Optimization Method of Transfer Streamlines in Integrated Passenger Hubs Based on 3D Spatial Perspective

To optimize the functional space layout of various transportation modes of the integrated passenger transport hub, and improve the transfer efficiency and service quality of the hub, a quantitative analysis of the transfer flow lines of the integrated passenger hub is carried out. The research clarifies the layout factors of the functional areas of the “get on and drop off areas” for each mode of transportation, generates a candidate set of the placement of each functional area, and determines the priority ranking of the candidate sets and the transfer starting and end locations. Based on the analysis of passenger route selection factors, the basic transfer streamline network is generated. The basic network is distributed according to the improved shortest path allocation algorithm, and the relevant parameters are calculated to simplify the initial transfer streamline network, generate and compare the initial network plan of the transfer streamline. Take Wuxi Integrated Passenger Transport Hub as an example to verify: when the weight coefficient λ = 0.65 and the number of allocations n = 207, the optimal solution T = 2,738,027 s is obtained. As the calculation is based on the 15,000 passenger transfer flow at Wuxi Station, the optimized average transfer time per person is 3 min 2 s. Compared with the current average transfer time per person at Wuxi Station of 4.5 min, the optimization effect of this paper is significant. The initial network generation and comparison method of the transfer flow line enables the space layout of the transportation modes of the hub to be coordinated with the transfer flow line design, and solves the problem of the transfer flow line design when the hub building space layout is determined. The hub is designed to meet the requirements of functional space layout, passenger transfer needs and interchange efficiency at the initial stage of architectural design.