ŠVK Journals (Šiaulių valstybinė kolegija)
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INFLUENCE OF HUMUS FERTILIZATION ON YIELD AND ESSENTIAL OIL ACCUMULATION OF THYMUS × CITRIODORUS
Full text linkThymus × citriodorus is medicinal, aromatic, essential oil bearing plant, this hybrid can accumulate commercial important chemical compound – geraniol in it’s essential oil. The aim of the present study was to evaluate the effect of fertilization with humus on the yield, for parameters of some leaf epidermal structures,as well as on the quantitative and qualitative composition of essential oils of T. × citriodorus plants that were grown in an open ground for three years. The experiment was done in eight experimental plots: four experimental plots were used as control and other four– for fertilization with humus. The essential oil was isolated by hydrodistillation and analysed by GC–FID and GC–MS. The results showed that fertilization with humus significantly positive affected the height of plant, the area covered by plant and the length of inflorescences in the first experimental year, the density of stomata in both epidermis of leaf in the first and second experimental years, but significantly negative affected the density of glandular trichomes in lower epidermis of leaf in the second experimental year. Fertilization with humus did not affect the percentage and composition of essential oil
ELEKTROMOBILIO „NISSAN LEAF“ ĮKROVOS IR IŠKROVOS ANALIZĖ
Full text linkStraipsnyje nagrinėjama elektromobilio „Nissan Leaf“ įkrovos ir iškrovos sistemų analizė, akcentuojant šiuolaikinių elektrinių transporto priemonių technologinę pažangą ir efektyvumo aspektus. Tyrimas apima skirtingų įkrovimo lygių (AC ir DC) bei jungčių tipų palyginimą, įkrovos sistemos komponentų ir valdymo signalų veikimą, taip pat rekuperacinio stabdymo iškrovos metodų analizę. Eksperimentinė dalis paremta realaus naudojimo duomenimis, gautais naudojant lėtąjį ir greitąjį įkrovimą, taip pat diagnostine įranga atliekamais matavimais. Nustatyta, kad įkrovimo efektyvumas siekia 94,9 proc., o rekuperacinis stabdymas padeda susigrąžinti dalį energijos. Palyginus „eco“ ir „drive“ režimus, nustatyta, kad energijos sąnaudos gali skirtis iki 21,5 proc., tai įrodo „eco“ režimo efektyvumą. Tyrimo rezultatai gali būti naudingi tobulinant elektromobilių energetines sistemas, tiriant elektromobilį ateityje stebint jo nusidėvėjimą, iškilusius gedimus. Taip pat suprasti realių parametrų skirtumą nuo gamintojo deklaruojamų parametrų
STATISTICS ANALYSIS DATA OF STUDENT DEPRESSION DETERMINANTS
Full text linkDepression is one of the most common psychological problems faced by human society. Since students are the group with less social experience and also the group bearing lots of responsibilities, depression incidence is much higher than in the general population. To help understand this further, this article aims to discuss statistics about student depression and identify key factors which can influence depression development
REMOTE WORK STRESS-DEPRESSION LEVELS DATA ANALYSIS
Full text linkAs remote work becomes increasingly common, it's essential to understand its effects on employees' well-being. This topic is relevant because while remote work offers flexibility, it can also come with its own set of challenges, especially when it comes to mental health. My research focuses on how working remotely influences stress levels, work-life balance, and mental health conditions across various industries and regions
ANALYSING THE FACTORS INFLUENCING MENTAL HEALTH AND THE INTERCONNECTIONS AMONG FACTORS IN INFORMATION TECHNOLOGY
Full text linkAbstract This study focused on the mental health of IT sector employees in Colombo, using quantitative research methods and data from 300 participants (162 males and 138 females) using the DASS 21 questionnaire and self-administered surveys through convenience sampling. Correlation analysis, chi-square tests, and regression analysis were utilized to examine the data. It found significant correlations between mental health outcomes (stress, anxiety, and depression) and factors like work-life balance, workload, working conditions, and physical fitness. Work-life balance, working environment, and workload were identified as the most significant predictors of mental health outcomes. Physical fitness was associated with stress, depression, and anxiety but had a limited overall impact on mental health. Differences in depression, stress, and anxiety levels were observed based on marital status, age group, work experience, salary, and gender. These findings emphasize the importance of addressing work-life balance and working conditions to enhance the mental health of IT sector employees in Colombo. They provide valuable insights for organizations and policymakers to develop strategies and interventions that promote employee well-being and productivity, underscoring the need to prioritize mental health and create a supportive work environment
ŠLAPIO PRODUKTO PAKUOTĖS KONVEJERIO PROJEKTAVIMAS
Full text linkŠiame straipsnyje nagrinėjami konvejerinės sistemos, skirtos šlapio produkto (vakuumuotų žuvies filė pakuočių) transportavimui maisto pramonės įmonėje automatizuoti, projektavimo ir diegimo klausimai. Nors automatizavimas ir robotizavimas tampa vis svarbesniais maisto pramonės veiksniais, jų pritaikymas šlapių produktų tvarkymui kelia specifinių iššūkių. Projektas apima esamų konvejerio sistemų analizę, konstrukcinius skaičiavimus ir ekonominį pagrindimą. Projektuojama sistema paremta moduline polipropileno (PP) juosta ir AISI 304 nerūdijančiu plienu, siekiant užtikrinti aukštą higienos lygį ir atitiktį maisto pramonės standartams. Ekonominė analizė parodė, kad konvejerio sistemos diegimas leis sumažinti darbo sąnaudas ir atsipirks per apytiksliai 60 darbo dienų, todėl tai yra ekonomiškai pagrįstas sprendimas automatizuojant vidutinės apimties žuvies filė apdorojimo liniją
DIVERSITY OF SECONDARY COMPONENTS OF MULTI- WORD ANATOMICAL TERMS IN POCKET ATLAS OF HUMAN ANATOMY
Full text linkMedical terms in the atlas can be basically divided into one-word and multi-word terms. Compound words are individual words made from two or more words working together. The object of the article is the relations between Latin and Lithuanian compound anatomical terms, according to diversity of secondary components.The purpose of the article is to reveal the similarities and differences between multi-word Latin and Lithuanian anatomical terms by structural diversity of components. To achieve the purpose, the following research tasks are set: to review the evolution of anatomical nomenclature; to compare Latin and Lithuanian multi-word anatomical terms according to the diversification of structure of components. Research methods. The method of theoretical analysis examines scientific literature, the comparative analysis of terms enables systematisation and generalisation of Latin and Lithuanian anatomical terms in the resource
Effect of Winglet-Designed Vortex Generators on Heat Transfer Performance in Corrugated Channels
Full text linkThis study focuses on improving heat transfer within corrugated channel. These channels are used to improve fluid mixing and heat transfer, but they typically result in recirculation zones inside. The study's goal is to reduce the amount of space that recirculates around the walls. To achieve this, we introduce vortex generators (VGs), where solid bodies are inserted to manipulate and change the flow direction. Winglet designs are used for the vortex generators at different angles, represented by the change in distance between the upper and lower winglets (D=2, 4, and 6 mm). This study is compared with a channel without vortex generators. The work is simulated using commercial software ANSYS Fluent based on conservation laws under different Reynolds numbers and turbulent flow. The SST k-omega model is commonly used due to its higher accuracy around walls. Parameters such as Nusselt number, pressure drop, pressure ratio, and performance enhancement factor are evaluated in detail
SKUODO RAJONO SAVIVALDYBĖS R. GRANAUSKO VIEŠOSIOS BIBLIOTEKOS YLAKIŲ FILIALO NAUSĖDŲ KNYGŲ IŠDAVIMO PUNKTO PASLAUGŲ KOKYBĖS VERTINIMAS BENDRUOMENĖS POŽIŪRIU
Full text linkStraipsnyje analizuojama Nausėdų knygų išdavimo punkto teikiamų paslaugų kokybė, vertinant ją vietos bendruomenės narių požiūriu. Tyrime taikytas kiekybinis metodas, pagrįstas SERVQUAL modeliu, leidusiu įvertinti penkias pagrindines paslaugų kokybės dimensijas. Gauti rezultatai atskleidžia paslaugų stipriąsias ir tobulintinas sritis, suteikdami pagrindą rekomendacijoms paslaugų gerinimui. Straipsnis skirtas viešųjų paslaugų kokybės vertinimo specialistams, bibliotekininkams ir kultūros institucijų vadybininkams
ELEKTRONINĖS PARDUOTUVĖS KLIENTŲ PASITENKINIMO ANALIZĖ
Full text linkVerslas, naujos technologijos ir išmani visuomen