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Source And Primary Factors Controlling Differential Enrichment For Helium In The Dongping Gas Field, Qaidam Basin, Xu Zhusong, Li Jian, Wang Xiaobo, Cui Huiying, Xia Yutian, Tian Jixian, Li Wanting, Chen Dawei Sep 2025

Source And Primary Factors Controlling Differential Enrichment For Helium In The Dongping Gas Field, Qaidam Basin, Xu Zhusong, Li Jian, Wang Xiaobo, Cui Huiying, Xia Yutian, Tian Jixian, Li Wanting, Chen Dawei

Coal Geology & Exploration

Background In recent years, promising helium-rich natural gas shows have been discovered in the Dongping gas field. However, the helium resources in the gas field exhibit lateral heterogeneity and vertical differential accumulation in multiple sequences, which restrict the further exploration of these resources. Methods By analyzing the lateral and vertical distribution characteristics of helium in the Dongping gas field, this study explored its origin and sources, analyzed the differences in geological backgrounds between helium-rich and helium-deficient gas reservoirs, and systematically summarized the differential enrichment pattern across different blocks within the Dongping gas field.Results and Conclusions In the Dongping gas …

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Water Filling Intensity Assessment Of A Coal Seam Roof In The Dahaize Coal Mine, Northern Ordos Basin, Liu Xi, Ding Xiang, Huang Haiyu, Li Zhaoyang, Li Zhe, Zheng Sheng Sep 2025

Water Filling Intensity Assessment Of A Coal Seam Roof In The Dahaize Coal Mine, Northern Ordos Basin, Liu Xi, Ding Xiang, Huang Haiyu, Li Zhaoyang, Li Zhe, Zheng Sheng

Coal Geology & Exploration

Background Assessing water filling intensity in coal seam floors lays a foundation for the prevention and control of water hazards in mines. However, in the Jurassic coalfield in the northern Ordos Basin, complex hydrogeological structures and sedimentary heterogeneity pose severe challenges to traditional evaluation methods. Methods This study investigated the water hazard characteristics in the superimposed aquifers of the Jurassic Yan’an and Zhiluo formations in the Dahaize Coal Mine in northern Shaanxi. The purpose is to establish a zoning and assessment system of water filling intensity that is suitable for continental sedimentary settings and to provide a scientific basis for …

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The Complete Leader: Relationships Between Leader Identity, Efficacy, And Psychological Well-Being And The Influence Of Gender And Leadership Level, Michelle I. Benami Sep 2025

The Complete Leader: Relationships Between Leader Identity, Efficacy, And Psychological Well-Being And The Influence Of Gender And Leadership Level, Michelle I. Benami

Doctoral Dissertations and Projects

Contributing factors to a leader’s psychological well-being and their ability to be fully functional, mature, and self-actualized, are highly under-researched. This study examined the relationship of leader identity and leader efficacy on a leader’s psychological well-being. The study also explored whether a leader’s gender and leadership role level influenced their leader identity, efficacy, and psychological well-being. Participants were 165 working organizational leaders from a variety of industries, ages 19-72 years old with 1-40 years of leadership experience. Data was collected via online self-report survey using the Leader Self-Identity, Leader Efficacy Questionnaire, and Ryff’s Psychological Well-Being scales. Analyses revealed leader identity …

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The Relationship Between Nursing Faculty Sense Of Belonging And Faculty Intent To Stay, Heather M. Bowers Sep 2025

The Relationship Between Nursing Faculty Sense Of Belonging And Faculty Intent To Stay, Heather M. Bowers

Doctoral Dissertations and Projects

The purpose of this quantitative causal-comparative and correlational study was to evaluate the relationship between workplace sense of belonging and intent to stay in the current nursing faculty role among full-time nursing faculty. The shortage of nursing faculty impacts the ability to prepare the next generation of nurses needed to meet worldwide nursing demands. Strategies to effectively recruit and retain nursing faculty are important considering the current shortage and increasing retirements of nursing faculty. While sense of belonging has been studied for student retention and studies are beginning to explore the importance of workplace belonging, the impact of organizational sense …

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Cardiovascular Disease In Rural Communities: Understanding The Challenges And Solutions – A Comparative Approach, Aariyana R. Britton Sep 2025

Cardiovascular Disease In Rural Communities: Understanding The Challenges And Solutions – A Comparative Approach, Aariyana R. Britton

Doctoral Dissertations and Projects

This research project explored the effects of cardiovascular disease (CVD) in rural and underrepresented populations while solidifying ways of mitigation in localities with little to no healthcare access. Research included highly underserved individuals who live in or around healthcare deserts with low health literacy statuses and poor resource distribution. CVD has skyrocketed into becoming the leading cause of death in the United States of America, so it is pertinent to create methods of investigation regarding how CVD is currently diagnosed, handled, and projected in these areas where there is a shortage of proper health access and training. While CVD is …

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Engaging The Hindu Community Of Loudoun County, Va With The Gospel Of Jesus Christ: An Evangelism Course For Telugu Christian Fellowship Church, Ravinder Rufus Bhimanpalli Sep 2025

Engaging The Hindu Community Of Loudoun County, Va With The Gospel Of Jesus Christ: An Evangelism Course For Telugu Christian Fellowship Church, Ravinder Rufus Bhimanpalli

Doctoral Dissertations and Projects

This Doctor of Ministry project addressed the lack of effective evangelism toward the Hindu community by the Telugu Christian Fellowship Church (TCFC) in Ashburn, Virginia. Located 35 miles from Washington, D.C., TCFC serves a suburban congregation of approximately 300 members, with an average weekly attendance of 250. The church is located in Loudoun County, one of America’s most diverse and affluent regions, home to over 44,000 Asian Indians and an estimated 18,000 Hindus. Despite this, the church’s outreach efforts had remained scattered and underdeveloped. Most church members lacked cultural sensitivity, feared offending them, or simply lacked the confidence to engage …

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Exploring The Relationship Between Perceived E-Working Experience And Autonomy In It Professionals, Sherry Hunt Sep 2025

Exploring The Relationship Between Perceived E-Working Experience And Autonomy In It Professionals, Sherry Hunt

Doctoral Dissertations and Projects

As remote work reshapes the professional landscape, understanding how e-working conditions influence the need for autonomy, a core component of motivation and well-being, is increasingly important. This quantitative, correlational study explored the relationship between perceived e-working experience and the psychological need for autonomy among 120 U.S.-based information technology (IT) professionals. Participants completed an online survey comprised of the E-Work Life (EWL) Scale (Charalampous et al., 2023; Grant et al., 2019) and two autonomy subscales from the Basic Psychological Needs Satisfaction and Frustration Work Scale (BPNSFWS) (Olafsen et al., 2021). Grounded in self-determination theory (SDT) (Ryan & Deci, 2000, 2017, 2020) …

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Exploring The Difference In Perceived Organizational Justice Between Remote And Traditional Workers And Relationships Between Perceived Organizational Justice And Job Satisfaction, Ryan Mabry Sep 2025

Exploring The Difference In Perceived Organizational Justice Between Remote And Traditional Workers And Relationships Between Perceived Organizational Justice And Job Satisfaction, Ryan Mabry

Doctoral Dissertations and Projects

Organizations struggle to achieve holistic job satisfaction, as remote workers often feel excluded and traditional workers frequently feel overworked. This quantitative study explored the perceived differences in organizational justice between remote and traditional workers. It also investigated the relationship between organizational justice and job satisfaction within both working environments. A sample size of 176 participants completed a 35-item Likert inventory covering demographics, working environment, job satisfaction, and organizational justice. An independent samples t-test was used to measure the differences in organizational justice between remote and traditional workers. A Pearson correlation examined the relationship between organizational justice and job satisfaction in …

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Adverse Childhood Experiences: How They Shape Employees' Perceptions, Experiences, And Performance In The Workplace, Marcia A. Beasley Sep 2025

Adverse Childhood Experiences: How They Shape Employees' Perceptions, Experiences, And Performance In The Workplace, Marcia A. Beasley

Doctoral Dissertations and Projects

The influence of Adverse Childhood Experiences (ACEs) has been well researched, and the lifelong consequences of medical conditions have been documented. Recently, research has linked mental health concerns to ACEs, including depression, anxiety, and health risk behaviors. ACEs occur during important stages of childhood development and can disrupt these stages, leading to children learn maladaptive coping skills. The resultant maladaptive behaviors that are developed as a response to maltreatment may also hinder social relationships in adulthood. Given this, research is lacking on the influence of ACEs on perceptions in the workplace, especially from the employee’s perspective. This qualitative phenomenological study …

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Relationship Between Alcohol Use And Obesity In Us Adults Aged 20 To 79, Chinwendu Echefu, Ramona Stone Sep 2025

Relationship Between Alcohol Use And Obesity In Us Adults Aged 20 To 79, Chinwendu Echefu, Ramona Stone

Public Health Sciences Faculty Publications

Purpose: This is a secondary data analysis carried out to determine the asso- ciation between alcohol use and obesity (BMI) in US adults aged 20 to 79 while adjusting for confounding factors that are known to affect obesity. Methods: The 2017-2018 National Health and Nutrition Examination Survey (NHANES) was utilized to provide a weighted sample of 16,548 adults between the ages of 20 and 79 with valid information for the BMI and for the average alcohol con- sumed per day over the past 12 months. Multivariable regression was done to determine the association between obesity, measured by the Body Mass …

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Face Off: Evaluating Virtual Human Expressions And Non-Tracking Control Methods In Vr, J K Sangeeth Chandran, Marisa Llorens Salvador, Cathy Ennis Sep 2025

Face Off: Evaluating Virtual Human Expressions And Non-Tracking Control Methods In Vr, J K Sangeeth Chandran, Marisa Llorens Salvador, Cathy Ennis

Conference papers

Social virtual reality (VR) applications have become more ubiquitous in recent years; central to this is the communication pipeline, how users perceive virtual human facial expressions, and how they control them in real time, especially when using VR devices without face-tracking. We investigated both aspects in a set of experiments. Firstly, we compared the perception of virtual human emotions on a traditional 2D screen and in VR. In a second experiment, we used a validated set of stimuli to compare three different control methods for manipulating an avatar’s facial expressions in VR. These control methods utilize non-tracking control techniques, which …

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Fractional-Order Adaptive Terminal Sliding Mode Control For Synchronization Of Uncertain Chaotic Memristive Chua's Circuit, Dorukhan Asteki̇n, Fati̇h Adigüzel Sep 2025

Fractional-Order Adaptive Terminal Sliding Mode Control For Synchronization Of Uncertain Chaotic Memristive Chua's Circuit, Dorukhan Asteki̇n, Fati̇h Adigüzel

Turkish Journal of Electrical Engineering and Computer Sciences

Memristive-based chaotic dynamical systems exhibit chaotic behavior with signals of unpredictable complex ity, making it difficult to achieve full synchronization in master-slave systems. Therefore, an advanced synchronization method is required to overcome the chaotic model uncertainties and external disturbances. In this study, a fractional order terminal sliding mode synchronization is proposed for the uncertain memristive chaotic Chua’s circuit. After presenting the integer-order model of the chaotic memristive Chua’s circuit, a fractional-order sliding surface-based non linear synchronization structure, incorporating the fractional derivative operator, is designed. The convergence of the synchronization closed-loop system is proven using Lyapunov theory. To demonstrate its effectiveness …

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Quality Improvement Project Empowering Nursing Instructors: Faculty Self-Efficacy & Consistency In Simulation Grading, April Guerin Sep 2025

Quality Improvement Project Empowering Nursing Instructors: Faculty Self-Efficacy & Consistency In Simulation Grading, April Guerin

Doctor of Nursing Practice Projects

This quality improvement (QI) project aims to evaluate the effectiveness of structured training on the Creighton Competency Evaluation Instrument (C-CEI) in improving nursing faculty self-efficacy and grading consistency in clinical student evaluations. Inconsistent clinical grading practices among nursing faculty create barriers to reliable competency evaluation and undermine student outcomes. Guided by the Donabedian Model and Lewin’s Change Theory, with implementation structured by the Plan-Do-Study-Act (PDSA) cycle, a quasi-experimental pre-post intervention design was used. Participants include nursing faculty responsible for clinical evaluations, who completed structured C-CEI training delivered via self-paced modules in a learning management system. Faculty self-efficacy was measured using …

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On The Usages Of Green’S Functıon On Tıme Scales, Firat University, Elazig, Turkiye, Ayse Cigdem Yar, Emrah Yılmaz, Sertac Goktas, Mersin University, Mersin, Turkiye Sep 2025

On The Usages Of Green’S Functıon On Tıme Scales, Firat University, Elazig, Turkiye, Ayse Cigdem Yar, Emrah Yılmaz, Sertac Goktas, Mersin University, Mersin, Turkiye

Baku Mathematical Journal

We deal with Green’s functions (Green’s-f ) for 2-nd order dynamic boundary value problems (BV-P’s) on T. Green’s function is established on T for different situations to solve constructed problems. These results show how important Green’s-f is for mathematical physics on T.

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A Combined Dld-Inar(P) Model For Overdispersed Count Data, Norbert Zongo University, Koudougou, Burkina Faso, Tegawende Martin Kabore, O. Jean-Etienne Ouedraogo Sep 2025

A Combined Dld-Inar(P) Model For Overdispersed Count Data, Norbert Zongo University, Koudougou, Burkina Faso, Tegawende Martin Kabore, O. Jean-Etienne Ouedraogo

Baku Mathematical Journal

In this paper, we develop a combined order p integer-valued autoregressive process whose marginal distribution follows the discrete Lindley distribution (DLD) [1]. Referred to as the CDLD-INAR(p) process, this model is particularly suited for modeling count time series exhibiting overdispersion. Formulation of this model is based on the binomial thinning operator introduced by Steutel [8]. Several conditional theoretical properties of the process are established, and its parameters are estimated using the conditional maximum likelihood method. The asymptotic properties of the resulting estimators are also investigated. Finally, the practical relevance of the proposed model is demonstrated through an application to real …

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On The Approximation Of Identity In Additive-Invariant Banach Function Spaces, Azerbaijan State Oil And Industry University, Baku, Azerbaijan, Migdad I. Ismailov, Chinara M. Gasanova, Ganja State University, Ganja, Azerbaijan Sep 2025

On The Approximation Of Identity In Additive-Invariant Banach Function Spaces, Azerbaijan State Oil And Industry University, Baku, Azerbaijan, Migdad I. Ismailov, Chinara M. Gasanova, Ganja State University, Ganja, Azerbaijan

Baku Mathematical Journal

Analog of Korovkin type theorem for the sequence of convolution operators in the subspaces of additive-invariant Banach spaces generated by the shift operator is obtained in this work. Convergence to the identity of the sequence of convolution operators with a positive approximate identity is proved. We also prove the convergence to the identity of Steklov operators in Marcinkiewicz spaces.

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Wavelet-Based Estimation Of Long-Memory Parameter In Stochastic Volatility Models Using A Robust Log-Periodogram, University Of Kara, Kara, Togo, Manganaw Ndaam, Tchilabalo Abozou Kpanzou, Edoh Katchekpele Sep 2025

Wavelet-Based Estimation Of Long-Memory Parameter In Stochastic Volatility Models Using A Robust Log-Periodogram, University Of Kara, Kara, Togo, Manganaw Ndaam, Tchilabalo Abozou Kpanzou, Edoh Katchekpele

Baku Mathematical Journal

In this paper, we propose a novel method for estimating the long-memory parameter in time series. By combining the multi-resolution framework of wavelets with the robustness of the least absolute deviations criterion, we introduce a periodogram providing a robust alternative to classical methods in the presence of non-Gaussian noise. Incorporating this periodogram into a log-periodogram regression, we develop a new estimator. Simulation studies demonstrate that our estimator outperforms the Geweke and PorterHudak (GPH) and wavelet-based log-periodogram (WBLP) estimators, particularly in terms of mean squared error, across various sample sizes and parameter configurations.

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On One Problem Of Feedback Control Of A Heating System, Azerbaijan State Oil And Industry University, Baku, Azerbaijan, Vagif Abdullayev Sep 2025

On One Problem Of Feedback Control Of A Heating System, Azerbaijan State Oil And Industry University, Baku, Azerbaijan, Vagif Abdullayev

Baku Mathematical Journal

We consider a problem of controlling a heating device intended for heating a coolant supplying heat to a closed system is considered. Feedback is used to control the process, in which information about the process state is continuously or discretely received from individual points of the device, where temperature sensors are installed. The mathematical model of the controlled process in both cases is described by a point-loaded first-order hyperbolic equation. Formulas for the gradient of the objective functional of the problem are obtained, allowing the use of first-order numerical optimization methods for solving problems. Numerical experiments are carried out using …

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On B−Repdigits Which Are Sums Of Three Narayana Numbers With A Consequence, University Of Kara, Kara, Togo, Pagdame Tiebekabe, S´Emou Diouf Cheikh, Anta Diop University, Dakar, Senegal, Salifou Nikiema, L´Ed´Ea Bernard Ou´Edraogo University (Ulbo), Somiaga, Burkina Faso Sep 2025

On B−Repdigits Which Are Sums Of Three Narayana Numbers With A Consequence, University Of Kara, Kara, Togo, Pagdame Tiebekabe, S´Emou Diouf Cheikh, Anta Diop University, Dakar, Senegal, Salifou Nikiema, L´Ed´Ea Bernard Ou´Edraogo University (Ulbo), Somiaga, Burkina Faso

Baku Mathematical Journal

The sequence known as Narayana’s cows sequence is defined by the thirdorder linear recurrence relation Nn = Nn−1 + Nn−3, for n ≥ 3, with the initial values given by N0 = N1 = N2 = 1. In this paper, we explore the class of numbers known as brepdigits that can be represented as the sum of three terms from this sequence. Specifically, we aim to identify all such numbers for bases in the range 2 ≤ b ≤ 30. Our approach relies on precise lower bounds for linear forms in logarithms, along with an enhanced version of the Baker-Davenport …

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Illustrations For A Scientific Review Article Publication : Human Stem Cell-Derived Organoids, Sunghwan Bae Sep 2025

Illustrations For A Scientific Review Article Publication : Human Stem Cell-Derived Organoids, Sunghwan Bae

Theses

This thesis explores the role of scientific illustration in improving the comprehension of complex scientific concepts. It traces the historical development of illustrations in scientific literature and examines their functions in both research and review articles. The central contribution of this work is the development of twelve vector-based illustrations that elucidate the applications of human organoids within a review article context. These visuals transform intricate ideas into clear, engaging representations, supported by extensive research and verification to maintain scientific accuracy. The thesis concludes by addressing the future of scientific illustration, advocating for reader-oriented design approaches and the use of innovative …

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Emotion Behind Casual Sex, Carla Thompson Ranalli Sep 2025

Emotion Behind Casual Sex, Carla Thompson Ranalli

Doctoral Dissertations and Projects

Health institutions have reported that women of middle-age continue to enjoy sexual activity. As such, women who engage in casual sex may or may not have developed emotional attachments to their partners, which may impact sexual gratification. Attachment theory proposes that attachment style is either secure or insecure, such as anxious or avoidant. This study investigated the relationship between insecure attachment style and sexual gratification among women between 40-50 years of age who engaged in casual sex. To answer these questions, the Adult Attachment Scale (AAQ) questionnaire was used to measure anxious and avoidant attachment, the Experience in Close Relationships …

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Probabilistic Intervals Around Population Forecasts: A New Approach With A Subnational Example Using Washington State Counties, David A. Swanson, Jeff Tayman Sep 2025

Probabilistic Intervals Around Population Forecasts: A New Approach With A Subnational Example Using Washington State Counties, David A. Swanson, Jeff Tayman

Publications, Reports and Presentations

Population forecasts produced by governments at all levels are used in the public sector, the private sector, and by researchers. They have been primarily produced using deterministic methods. This paper shows how a method for producing measures of uncertainty can be applied to existing subnational population forecasts while meeting several important criteria, including the concept of utility. The paper includes an assessment of the efficacy of the method by: (1) examining the change in uncertainty intervals it produces by population size and population growth rate; and (2) comparing the width and temporal change of the uncertainty intervals it produces to …

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Prokaryotic Expression Of Recombinant Plectasin Optimization Of High-Density Fermentation Conditions And Antibacterial Activity, Su Yan, Li Rong Sep 2025

Prokaryotic Expression Of Recombinant Plectasin Optimization Of High-Density Fermentation Conditions And Antibacterial Activity, Su Yan, Li Rong

Food and Machinery

[Objective] To construct a recombinant strain expressing the antimicrobial peptide Plectasin, optimize the high-density fermentation conditions of the recombinant strain, and evaluate the antibacterial activity of the purified recombinant peptide produced under optimized conditions. [Methods] To improve soluble expression of the target protein, the plectasin gene was synthesized and optimized based on codon preference of the prokaryotic expression system with signal peptide deletion. The optimized gene was cloned into the pET32a(+) expression vector to construct the recombinant plasmid pET 32a-plectasin, which was transformed into Escherichia coli BL21(DE3)/pLysS competent cells. Single-factor and orthogonal experiments were designed to optimize the parameters of …

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Describing The Retention Experiences Of Special Education Teachers In Rural California: A Phenomenological Study, Adriel Gama Reynoso Sep 2025

Describing The Retention Experiences Of Special Education Teachers In Rural California: A Phenomenological Study, Adriel Gama Reynoso

Doctoral Dissertations and Projects

The purpose of this transcendental phenomenological study was to describe the retention experiences of special education teachers who taught in rural elementary school districts in California. Retention was generally defined as a teacher who was influenced to stay with their district for a long time. The theory guiding this study was Herzberg’s two-factor theory of motivation-hygiene. This theory was particularly effective in addressing teacher retention because it provided a clear framework for understanding the factors that contribute to job satisfaction and dissatisfaction. This transcendental phenomenological study described the retention of special education teachers who taught in rural elementary school districts …

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Stigma And Attitudes Of Hearing Parents Regarding Sign Language On The Perceived Resilience Of Their Deaf And Hard-Of-Hearing Emerging Adults: A Correlational Study, David Eric Barr Sep 2025

Stigma And Attitudes Of Hearing Parents Regarding Sign Language On The Perceived Resilience Of Their Deaf And Hard-Of-Hearing Emerging Adults: A Correlational Study, David Eric Barr

Doctoral Dissertations and Projects

Research studies investigating DHH emerging adults’ resilience are scarce. Current resilience investigations suggest that success in overcoming life challenges depends on the personal resourcing of learned social skills. For the DHH emerging adult, adversity (i.e., stigma and attitudes regarding sign language) fosters hindrance against resilience, which is imperative for one’s successful adaptation to challenging life experiences. The purpose of this quantitative correlational study was to examine stigma and the attitudes of hearing parents, the target population, regarding sign language and its perceived impact on the resilience of their Deaf and hard-of-hearing emerging adults. Data were collected using an online anonymous …

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Working With Different Generations In The Post-Covid Remote Workplace: The Millennial Perspective, Rhys Morgan Alexander Sep 2025

Working With Different Generations In The Post-Covid Remote Workplace: The Millennial Perspective, Rhys Morgan Alexander

Doctoral Dissertations and Projects

Generational theory proposes that generations are inherently different from one another based on the events that occur within their lifetimes at various developmental stages. These differences have been studied in many contexts, including within the work environment. As older generations continue to remain employed, and with the shift to remote work post-COVID 19, this topic remains an important concentration for developmental and organizational researchers. The differences between generations have been found to impact on job satisfaction and general work value priorities to varying degrees. Based on this, a literature review was conducted followed by a phenomenological, interview-based study to explore …

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The Cowl - V. 89 N. 2 - September 25, 2025 Sep 2025

The Cowl - V. 89 N. 2 - September 25, 2025

The Cowl

The Cowl - student newspaper of Providence College. Vol. 89 No. 2 - September 25, 2025. 16 pages.

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Effects Of Thermal Treatments And High-Pressure Defatting Processes On The Quality And Functional Characteristics Of Rice Bran, Chen Yun, Han Xiaomiao, Wu Suxi, Cai Yongjian, Miao Yongjun Sep 2025

Effects Of Thermal Treatments And High-Pressure Defatting Processes On The Quality And Functional Characteristics Of Rice Bran, Chen Yun, Han Xiaomiao, Wu Suxi, Cai Yongjian, Miao Yongjun

Food and Machinery

[Objective] To investigate the effects of thermal treatments (dry heat, microwave, and high-temperature high-pressure steam) and high-pressure defatting processes (supercritical CO2 extraction and ultrasound-assisted subcritical n-butane extraction) on the quality of rice bran, aiming to improve its stability and potential for high-value utilization. [Methods] Rice bran was pretreated by dry heat, microwave, and high-temperature high-pressure steam, combined with two high-pressure defatting techniques. The effects on lipase activity, storage stability, and physicochemical properties of rice bran were systematically analyzed. [Results] High-temperature high-pressure steam treatment (121℃, 20 min) significantly reduced lipase activity to 19.87 mg/g and effectively inhibited the accumulation of free …

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Research On Tomato Comprehensive Quality Detection Method Based On Improved U-Net And Iwoa-Lssvm, Shi Lichun, Bian Keke, Wang Songwei, Wang Zhizhong Sep 2025

Research On Tomato Comprehensive Quality Detection Method Based On Improved U-Net And Iwoa-Lssvm, Shi Lichun, Bian Keke, Wang Songwei, Wang Zhizhong

Food and Machinery

[Objective] To improve the detection accuracy and efficiency of non-destructive testing methods for tomatoes in food production. [Methods] Based on an automatic tomato sorting system, a comprehensive quality detection method for tomatoes was proposed, integrating machine vision, a multi-scale residual attention U-Net model, an improved whale optimization algorithm (IWOA), and a least squares support vector machine (LSSVM). Tomato image information was collected using machine vision. Tomato images were segmented using the multi-scale residual attention U-Net model to measure fruit diameter parameters. The parameters of the LSSVM model were optimized using an IWOA with chaotic mapping and an adaptive convergence factor …

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Gamma-Aminobutyric Acid Biosynthesis Via Fermentation Using Lactiplantibacillus Plantarum With Optimized Glutamate Decarboxylase Expression Conditions, Yang Shengyuan, Fan Genjun, Liu Yiying Sep 2025

Gamma-Aminobutyric Acid Biosynthesis Via Fermentation Using Lactiplantibacillus Plantarum With Optimized Glutamate Decarboxylase Expression Conditions, Yang Shengyuan, Fan Genjun, Liu Yiying

Food and Machinery

[Objective] To enhance the biosynthesis efficiency of gamma-aminobutyric acid (GABA) via submerged fermentation by Lactiplantibacillus plantarum. [Methods] With the activity of whole-cell glutamate decarboxylase (GAD) as an evaluation indicator, the GAD production conditions are optimized through systematic investigation of both fermentation conditions and culture media, and the fermentation process for GABA production is subsequently established based on these optimized conditions. [Results] The optimal fermentation conditions for GAD production by Lpb.plantarum Y-2 are static culture at 30℃ for 48 h in a modified MRS (MMRS) medium containing 10 g/L peptone, 10 g/L beef extract, 5 g/L yeast extract, 10 g/L sucrose, …

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