bluuebunny/crossref_metadata_2025_split huggingface dataset:
Investigation of basic psychological needs of leisure time of Faculty of Sport Sciences students in terms of some variables
Authors: Özmaden Murat , Ölçücü Burçin , Dokuzoğlu Gökhan , Çevik Ali , Eren Muhammed Ömer , Yaylı Hakan 
Published: June 2022

Objective: In this study, the basic psychological needs of sports sciences students at leisure time were analyzed in terms of certain variables. The population of the study is the students from the faculty of sports sciences.
Method: The questionnaire which was used to collect the related data in the study consists of two parts. The personal information form created by the researcher, and in the second section, Basic Psychological Needs Scale in Leisure Activity (BPNSLA), which was adapted into Turkish by Güneş (2019), developed by Vlachopoulos and Mchailidou (2006) was used. Statistical analysis was performed on the obtained data using the SPSS 25.0 package program. A Mann Whitney U test was applied for binary variables, and a Kruskal Wallis H test was conducted for more than two variables. The findings were statistically tested with significance level of p<0.05.
Findings: The scores on the participants' Basic Psychological Needs Scale in Leisure Activity (BPNSLA) scala, show that they are generally high in scale totals and sub-dimensions. According to the analysis conducted between the participants' leisure time psychological needs and gender variable, there is statistically significant difference in the autonomy sub-dimension, in the average scale and all sub-dimensions at department variable, in the sub-dimension of association at the class variable, and in the average scale and all sub-dimensions at the leisure time evaluation variable (p<0.05).
​Extended English summary is in the end of Full Text PDF (TURKISH) file.

Özet
Amaç: Bu araştırmada spor bilimleri fakültesi öğrencilerinin serbest zaman temel psikolojik ihtiyaçları bazı değişkenler açısından incelenmiştir.
Yöntem: Araştırmada ilgili verilerin toplanması için kullanılan anket iki bölümden oluşmuştur. Birinci bölümde araştırmacı tarafından oluşturulan kişisel bilgiler formu, ikinci bölümde Vlachopoulos ve Mchailidou (2006) tarafından geliştirilen Güneş (2019) tarafından Türkçeye uyarlaması yapılan Serbest Zaman Temel Psikolojik İhtiyaçlar Ölçeği kullanılmıştır. Elde edilen veriler SPSS 25.0 paket programı kullanılarak istatistiksel analiz yapılmıştır. İkili değişkenler için Mann Whitney U testi, ikiden fazla değişkenler için Kruskal Wallis H testi yapılmıştır. Elde edilen bulgular istatistiksel olarak p<0,05 anlamlılık düzeyi ile test edilmiştir.
Bulgular: Katılımcıların Serbest Zaman Temel Psikolojik İhtiyaçlar Ölçeği puanlarına baktığımızda ölçek toplamlarında ve alt boyutlarında genel olarak ölçek puanlarının yüksek olduğu görülmektedir. Katılımcıların serbest zaman psikolojik ihtiyaçları ile cinsiyet değişkeni arasında yapılan analiz sonucu özerklik alt boyutunda, bölüm değişkeninde ölçek ortalama ve tüm alt boyutlarında, sınıf değişkeninde ilişkili olma alt boyutunda ve boş zaman değerlendirme değişkeninde ölçek ortalama ve tüm alt boyutlarda istatistiksel olarak anlamlı farklılık olduğu görülmektedir (p<0.05).
Aktivitas Enzim dan Identifikasi Fenotipik Isolat Kapang Aspergillus Kelompok Flavi Dari DUCC (Diponegoro University Culture Collections)
Authors: Karima Radhita , Rukmi MG Isworo , Kusumaningrum Hermin Pancasakti 
Published: June 2022

Fungi has an important role as decomposer since they can produce hydrolytic enzymes. The enzyme produced by fungi can be useful for industrial and biotechnology purposes. Aspergillus section Flavi are known to have the ability in producing several enzymes. The aims of this study were to find out the ability of Aspergillus section Flavi from Diponegoro University Culture Collection in producing amylase, protease and cellulase enzymes and also identify the species using phenotypic method. The fungal enzymatic activity was examined by calculating enzymatic index on specific media. The results showed that all isolates have a potential as enzyme producers. Phenotypic identification were characterized based on macro- and micromorphology. Isolates F130, F80CB, F138 dan F10A were identified as A.tamarii, while F43 and F20A were identified as A.flavus.
Kelimpahan Dan Keragaman Serangga OPT (Organisme Pengganggu Tanaman) dan Musuh Alaminya pada Tanaman Jagung dan Padi dengan Sistem Rotasi Tanaman
Authors: Ervianna Ana Rita , Hadi Mochamad , Rahadian Rully 
Published: June 2022

Insects in agricultural ecosystem can play a role as pests or natural enemies. The abundance and diversity of insect pests and natural enemies are interconnected because insect pests are food for natural enemy insects. The aims of the study were to compare the abundance and diversity of pest insects and natural enemies of corn and rice plant, and to determine the similarity of pest insects and natural enemies of corn and rice plant using crop rotation systems. The sampling has performed four times i.e, in the vegetative phase of corn, generative corn, vegetative rice, and generative rice. The sampling method used sweep net method. The results showed that the number of individual pest insects and natural enemies of each growth phase of corn plants were lower than rice plants. The number of species pest insect and natural enemies of each growth phase of corn plants were lower than rice plants. In addition the diversity of pest insect of each growth phase of corn plants was higher than rice plants while the diversity of natural enemies in each growth phase of corn plants was lower than rice plants. The diversity index of pest insects and natural enemies of each growth phase in corn plants and rice plants was in the medium category. The presence of pest insects and natural enemies in each growth phase of corn and rice plants shows the species in the two compared ecosystems were different.
Keanekaragaman dan Hubungan Kekerabatan Fenetik Spesies Anggota Famili Asteraceae di Jalur Pendakian Gunung Lawu Berdasarkan Karakter Morfologis
Authors: Qatrunnada Q , Susandarini Ratna 
Published: June 2022

Asteraceae is one of the most diverse families in Angiosperms with an estimated of 23,600 species worldwide. One of the interesting place to explore the diversity of Asteraceae is Mount Lawu which has high potential for ecotourism. The newest track commonly used to climb to Mount Lawu is through Candi Cetho hiking track that was established in 2015. The study on the diversity of Asteraceae species on Candi Cetho hiking track has not been done before. The objective of this study was to explore the species diversity of Asteraceae and to determine their taxonomic relationship based on morphological characters. Plant samples were collected using explorative method along the hiking track, covering the altitude of 1,440 to 2,550 m above sea level. Identification of plant specimens based on morphological characters showed the existence of 13 species. Cluster analysis on 50 morphological characters was done using Euclidean distance and UPGMA method resulted in the recognition of two clusters. Based on the principal component analysis, the morphological characters which showed highest role in the grouping of Asteceae species into two clusters were the base of the upper leaf, flower color, and upper leaf attachment type.
Some Estimates for Virtual Element Methods in Three Dimensions
Authors: Huang Jianguo , Yu Yue 
Published: June 2022

Abstract
Some estimates on virtual element methods (VEMs), including inverse inequalities, norm equivalence, and interpolation error estimates, are developed for star-shaped polyhedral meshes whose faces admit virtual regular and quasi-uniform triangulations. This mesh regularity covers the usual ones used for theoretical analysis of VEMs, and the proofs are carried out in a straightforward way.
A hidden Markov optimization model for processing and recognition of English speech feature signals
Authors: Chen Yinchun 
Published: June 2022

Abstract
Speech recognition plays an important role in human–computer interaction. The higher the accuracy and efficiency of speech recognition are, the larger the improvement of human–computer interaction performance. This article briefly introduced the hidden Markov model (HMM)-based English speech recognition algorithm and combined it with a back-propagation neural network (BPNN) to further improve the recognition accuracy and reduce the recognition time of English speech. Then, the BPNN-combined HMM algorithm was simulated and compared with the HMM algorithm and the BPNN algorithm. The results showed that increasing the number of test samples increased the word error rate and recognition time of the three speech recognition algorithms, among which the word error rate and recognition time of the BPNN-combined HMM algorithm were the lowest. In conclusion, the BPNN-combined HMM can effectively recognize English speeches, which provides a valid reference for intelligent recognition of English speeches by computers.
Ovarian Hormones Regulate Nicotine Consumption and Accumbens Glutamatergic Plasticity in Female Rats
Authors: Maher Erin E. , Kipp Zachary A. , Leyrer-Jackson Jonna M. , Khatri Shailesh , Bondy Emma , Martinez Genesee J. , Beckmann Joshua S. , Hinds Terry D. , Bimonte-Nelson Heather A. , Gipson Cassandra D. 
Published: June 2022

AbstractWomen report greater cigarette cravings during the menstrual cycle phase with higher circulating levels of 17β-estradiol (E2), which is metabolized to estrone (E1). Both E2 and E1 bind to estrogen receptors (ERs), which have been highly studied in the breast, uterus, and ovary. Recent studies have found that ERs are also located on GABAergic medium spiny neurons (MSNs) within the nucleus accumbens core (NAcore). Glutamatergic plasticity in NAcore MSNs is altered following nicotine use; however, it is unknown whether estrogens impact this neurobiological consequence. To test the effect of estrogen on nicotine use, we ovariectomized (OVX) female rats that then underwent nicotine self-administration acquisition and compared them to ovary-intact (sham) rats. The OVX animals then received either sesame oil (vehicle), E2, or E1+E2 supplementation for 4 or 20 d before nicotine sessions. While both ovary-intact and OVX females readily discriminated levers, OVX females consumed less nicotine than sham females. Further, neither E2 nor E1+E2 increased nicotine consumption back to sham levels following OVX, regardless of the duration of the treatment. OVX also rendered NAcore MSNs in a potentiated state following nicotine self-administration, which was reversed by 4 d of systemic E2 treatment. Finally, we found that E2 and E1+E2 increased ERα mRNA in the NAcore, but nicotine suppressed this regardless of hormone treatment. Together, these results show that estrogens regulate nicotine neurobiology, but additional factors may be required to restore nicotine consumption to ovary-intact levels.
Sound Velocities in Graphene-Based Epoxy Nanocomposites
Authors: Nadtochiy Andriy , Gorelov Borys , Polovina Oleksiy , Shulga Sergiy , Korotchenkov Oleg , Gorb Alla 
Published: June 2022

Elastic properties of epoxy-based nanocomposites (ENCs) filled with bare and TiO2-deposied multi-layered graphene nanoplatelets (MLG) have been tested by using a phase-frequency continuous-wave ultrasound probing (USP). The dian epoxy CHS-EPOXY 520 curried with diethylenetriamine (DETA) was the polymer matrix for the nanocomposites. The nanoplatelets of the specific surface area Sf ~ 790 m2/g consist of several dozen loosely bound monoatomic graphene layers with an area of about least 5×5 μm2. MLG-mass-loading (φf,m) of the nanocomposites varied from 0.1 % to 5.0 % by weight. Anatase- TiO2 particles, being of about 50 nm in diameter and of Sf ~ 1500 m2/g, have been deposited on MLG in mass concentration of about 1 %. Elastic moduli of the ENCs (namely, the Lame’s constants, the Young’s module, the compression module, and the Poisson’s ratio) have demonstrated negligible variation with φf,m varying regardless the type of filling particles. However, MLG:TiO2-hybrid nanoparticles have proven to impact stronger on the moduli as compared to bare MLG. This result shows a capability to modify molecular structure of epoxy resins by controlling surface reactivity of MLG embedded in the resin.
A simple HPLC-DAD method for analysis of phenolic acids: Addition effect of a hydrophilic deep eutectic solvent to the mobile phase
Authors: Pérez-López Luis Alejandro , Cavazos-Rocha Norma , Delgado-Montemayor Cecilia , Waksman-Minsky Noemí , Hernández-Salazar Marcelo , Portillo-Castillo Omar J. 
Published: June 2022

AbstractThe analysis of phenolic acids (PAs) is of great importance, because they are frequently present in natural products and their derivatives, and these compounds also have multiple beneficial effects to human health. This work is focusing on the separation of seven PAs (caffeic acid, coumaric acid, gallic acid, ferulic acid, protocatechuic acid, sinapic acid, and syringic acid), in a reversed-phase liquid chromatographic (RP-HPLC) isocratic method using a hydrophilic deep eutectic solvent (DES) as a mobile phase additive. The analysis was carried out with a diode array detector. The used DES was composed by choline chloride and glycerol, and it was characterized by infrared spectroscopy. The combination of choline chloride:glycerol (1:4) added at 0.25% to mobile phase composed of 0.15% formic acid aqueous solution and methanol (80:20), showed the best separation for target analytes. The new proposed method was validated, and results indicated that the proposed method is linear, selective for almost all analytes, provided high sensitivity with limit of detection ranges from 0.009 to 0.023 mg mL−1, and has satisfactory precision and accuracy, with values of relative standard deviation of 0.24–2.65% and recoveries of 97.97–109%, respectively. Additionally, this method was successfully applied to simultaneous determination of phenolic acids in three kinds of samples of powder to prepare lemon flavour drink enriched with black tea extract.
Proximate analysis of lipid composition in Moroccan truffles and desert truffles
Authors: Henkrar Fatima , Khabar Lahsen 
Published: June 2022

Lipid composition in truffle is essential for nutraceutical and medicinal purposes. Currently, there is no data regarding the lipid content in Moroccan truffles. Therefore, we determined the fatty acid and sterol composition of six Moroccan truffles and desert truffles. The gas chromatography analysis revealed the predominance of fatty palmitic, oleic and linoleic acids. The prominent sterol components were brassicasterol and ergosterol. Besides, the sterol analysis discriminated between the Tuber and Terfezia truffles. These differences seem to be exploitable at a taxonomic level. This is a preliminary report disclosing the fatty acid and sterol composition of Moroccan truffles, indicating the potential use of lipids analysis, especially sterol analysis, as biomarker for truffles distinction.
Highlighting Mycorrhizal Structures in Roots of Zea mays L.
Authors: POP MOLDOVAN Victoria , VIDICAN Roxana , CORCOZ Larisa , STOIAN Vlad 
Published: June 2022

Agriculture is one of the key economic activities designed to provide food for a growing population. It is expected that 21st-century agriculture will try to reduce the number of fertilizers by using microorganisms, in this category arbuscular mycorrhizas representing a complex set of benefits for plants and ecosystem services. The aim of this paper is to identify the mycorrhizal structures present in the roots of Zea mays. The objectives of the research are: i) are mycorrhizae natively present in the corn root and have a constant presence from the first stages of plant development? and ii) what kind of colonization pattern is characteristic of these roots? Maize has prominent fasciculate roots, and due to its intense branching capacity provides increased biological support for the establishment of mycorrhizal symbionts. Within the fungal structures highlighted, the most prominent were arbuscules and vesicles. Arum-type arbuscules were mostly observed, Paris-type arbuscules being less common in this species. Vesicles have a low frequency in the root cortex. They are present only in the early stages of plant development. Vesicular-arbuscular mycorrhizae are present in the root of the Zea mays plant with a constant presence, without major fluctuations.
Highlighting the Structures and Patterns of Fungal Colonization in the Species Festuca rubra
Authors: CORCOZ Larisa , VIDICAN Roxana , POP-MOLDOVAN Victoria , STOIAN Vlad 
Published: June 2022

Grasslands are the most dynamic ecosystems are characterized by high biodiversity both above-ground and underground. The biggest problem in these ecosystems is oligotrophy. The phenomenon affects the stability and resilience of these ecosystems, increasing the impact of biological processes. The symbiotic relationship between plants and mycorrhizas is a natural option with a great impact on maintaining the high natural value of ecosystems. This article aims rating colonization Festuca rubra, dominant in a mountain grassland ecosystem. Roots were cleared and stained with ink for the detection of mycorrhizas in roots. All root samples were analyzed with an optical microscope for the detection of mycorrhizal structures. The results obtained highlight a main mycorrhizal pattern as well as specific subcategories. Both types of arbuscules were identified: Arum and Paris. The results obtained highlight a main mycorrhizal pattern as well as specific subcategories. Vesicles are structures with a constant lack of consistency, which indicates their fluctuating nature. The mycorrhizal pattern of Festuca rubra as the dominant species in the pratol ecosystem may be the first step towards a more detailed understanding of the fungal strategy as well as the increased importance in the stability of the pratol ecosystem.
Evaluation of Microclimate Parameters, the Interdependence Between Them on Two Types of Bedding in the Broiler Houses
Authors: HEGEDUS Cristina , PAȘCALĂU Simona , ANDRONIE Luisa , ROTARU Ancuța 
Published: June 2022

The research was carried out in broiler houses coming from a commercial broiler farm. Two consecutive series of broiler were followed for each of the specific housing conditions in terms of bedding quality: straw: series 1 and 2 in shelter H4 and bedding mixture: ¼ straw and the rest sawdust for series 1 and 2 housed in shelter H10. The microclimate parameters were monitored daily in three different areas, the value of the three readings representing the average. To reduce the pH of the bedding and inclusive of the removal of ammonia resulting from the degradation of organic matter in the bedding, it is returned 2-3 times a week. The results reveal that: there are no exceedances of the values in terms of physical parameters of microclimate, between them there are extremely significant correlations (positive or negative). The correlation between the temperature of the straw bedding and the carbon dioxide in the shelter air is extremely significant and insignificant at the level of the mixed bedding. The pH of the bedding has lower values in the case of the straw ¼+ sawdust mixture by turning the bedding 2-3 times a week. The temperature value at the bedding level is lower in the case of straw compared to the mixture of straw ¼+ sawdust (29.69±2.38 0C - 26.35±2.64 0C), which entails significant differences (*P<0.05). Between the quality of the bedding in terms of pH and the amount of ammonia monitored at the level of the houses, there is an extremely close negative relationship: (-0.83*** ppm NH3), straw bedding and (-0.96*** ppm NH3) straw ¼+ sawdust mixture bedding. Conclusion: keeping the microclimate parameters under control by ensuring the necessary air volume, monitoring the pollutants but also the physical microclimate parameters, regular return of bedding have as a result low mortality rate and low percentage of ammonia burns which denotes ensuring good welfare conditions.
Phytochemical screening and antioxidant capacity of two berry cultivars, ‘Ruben’ and ‘Duke’, depending on their harvesting time
Authors: BUDĂU Ruben , MEMETE Adriana R. , TIMOFTE Adrian I. , VICAS Simona I. 
Published: June 2022

Commercial berry production is an attractive industry worldwide, including in Romania because berries are a rich source of bioactive compounds with antioxidant capacity, thus becoming the most important functional and nutraceutical foods in our diet. The aim of our work was to characterize two different species, Saskatoon berry (Amelanchier alnifolia Nutt., Rosaceae) and blueberry (Vaccinium corymbosum L., Ericaceae), from the point of view of total phenols and anthocyanin as well as of antioxidant capacity depending on their harvesting time. The analyzed cultivars ‘Ruben’ and ‘Duke’ were cultivated in the North-West of Romania, the first cultivar has been officially introduced in Romania in 2018. The results show that ‘Ruben’ cultivar is richer in bioactive compounds compared with ‘Duke’ cultivars. The level of total phenols of ‘Ruben’ cultivar was 297.937 ± 4.30 and 347.412 ± 14.13 mg GAE/100 g fw (fresh weight) at early and full ripening time, respectively. The highest anthocyanins content was found in ‘Ruben’ cultivar (410.659 ± 52.88 mg/100 g fw) at full ripening time. Also, the high values of antioxidant capacity determined by four different methods (DPPH, FRAP, ABTS, CUPRAC) was recorded in the case of cultivar ‘Ruben’. Both blueberry cultivars ‘Duke’ and ‘Ruben’ are rich sources in bioactive compounds such as phenolics, especially anthocyanins. The blueberries harvested at full ripening period provided the highest level of total phenols and anthocyanins compounds. These compounds act as powerful antioxidants and thus they could improve the health status of the human body, or can be used by food and nutraceutical manufacturers.
In Vitro Qualitative Assessment of Tolerance to Simulated Gastric Juice, Bile, Fructose, Glucose and Lactose for Different Probiotic Bacteria
Authors: MATEI LAȚIU Maria Cătălina , BUZA Victoria , CHIRILĂ Flore , BOROS Zsolt , LAȚIU Călin , SZAKACS Andrei Radu , ȘTEFĂNUȚ Laura Cristina 
Published: June 2022

Probiotics are live microorganisms that confer a health benefit to the host when administered in adequate amounts, with the main site of action at the intestinal level. In order to have a maximal effect, probiotic bacteria have to prove a high tolerance for the conditions present in the upper gastro-intestinal tract. The aim of the present study was to assess, from a qualitative point of view, the tolerance of different probiotic bacterial strains and combinations to simulated gastric juice, bile, fructose, lactose and glucose. Also, the influence of food on the bacterial growth after artificial digestion was analyzed. A bacteriologic assessment was realized for three different commercial probiotic products (Bacillus subtilis + Bacillus licheniformis + Pediococcus acidilactici; Enterococcus faecium; Bacillus subtilis + B. licheniformis + B.coagulans + B.indicus + B. clausii), simulating different conditions (artificial digestion method in the absence/presence of food, presence of bile, fructose, glucose, lactose). The obtained results suggested that the tolerance to simulated gastric juice is higher if the food is present in the moment of digestion, regardless of the probiotic bacterial strain or combination. Also, the tolerance to bile was different from one combination to another. The influence of fructose, lactose and glucose are not remarkable from a qualitative point of view. Moreover, the growth of different probiotic bacterial strains is influenced by the simulated gastro-intestinal conditions, sporulated bacteria presenting a slightly higher tolerance compared with non-sporulated strains.