bluuebunny/crossref_metadata_2025_split huggingface dataset:
Relationships between surrogate measures of mechanical and psychophysiological load, patellar tendon adaptations, and neuromuscular performance in NCAA division I men's volleyball athletes
Authors: Guthrie Brian M. , King Erica L. , Patwardhan Shriniwas , Wei Qi , Sikdar Siddhartha , Chitnis Parag V. , Jones Margaret T. 
Published: February 2023

IntroductionPatellar tendon adaptations occur in response to mechanical load. Appropriate loading is necessary to elicit positive adaptations with increased risk of injury and decreased performance likely if loading exceeds the capacity of the tendon. The aim of the current study was to examine intra-individual associations between workloads and patellar tendon properties and neuromuscular performance in collegiate volleyball athletes.MethodsNational Collegiate Athletics Association Division I men's volleyball athletes (n = 16, age: 20.33 ± 1.15 years, height: 193.50 ± 6.50 cm, body mass: 84.32 ± 7.99 kg, bodyfat%: 13.18 ± 4.72%) competing across 9 weeks of in-season competition participated. Daily measurements of external workloads (i.e., jump count) and internal workloads [i.e., session rating of perceived exertion (sRPE)] were recorded. Weekly measurements included neuromuscular performance assessments (i.e., countermovement jump, drop jump), and ultrasound images of the patellar tendon to evaluate structural adaptations. Repeated measures correlations (r-rm) assessed intra-individual associations among performance and patellar tendon metrics.ResultsWorkload measures exhibited significant negative small to moderate (r-rm =−0.26–0.31) associations with neuromuscular performance, negative (r-rm = −0.21–0.30), and positive (r-rm = 0.20–0.32) small to moderate associations with patellar tendon properties.DiscussionMonitoring change in tendon composition and performance adaptations alongside workloads may inform evidence-based frameworks toward managing and reducing the risk of the development of patellar tendinopathy in collegiate men's volleyball athletes.
Simulated gastric hydrolysis and developmental toxicity of dimethyltin bis(2-ethylhexylthioglycolate) in rats
Authors: Kirf Dominik , Costlow Richard , Nasshan Hans , Frenkel Peter , Mondimore Donna 
Published: February 2023

Dimethyltin dichloride is used as the putative toxophore for dimethyltin bis-alkylthio esters in a read-across approach. Recent chemical and toxicological investigations challenges this read across as data on dioctyltin bis(2-ethylhexyl thioglycolate) and dibutyltin bis(2-ethylhexyl thioglycolate) showed the dialkyltin thioglycolates do not generate dialkyltin dichloride. Results obtained by 119Sn-NMR spectroscopy demonstrated that dimethyltin bis(2-ethylhexyl thioglycolate), the smallest commercially manufactured dialkyltin thioester molecule of this kind, hydrolyzed to dimethyltin chloro-(2-ethylhexyl) thioglycolate under simulated gastric conditions. These studies did not detect dimethyltin dichloride. Dimethyltin bis(2-ethylhexyl thioglycolate) was administered orally to timed-pregnant Wistar-Han rats in an Arachis oil vehicle at 5, 10, and 25 mg/kg/day [Gestation Day 6 (GD6) through GD20] with no maternal deaths observed. At 25 mg/kg/day treatment statistically significant reductions occurred in feed consumption (−9%), maternal body weight (−2.4%) and adjusted maternal weight gain (−68%). There were no adverse gestational findings. Maternal thymus weight was significantly reduced in rats at 25 mg/kg in the absence of changes in hormone levels of T3, T4 or TSH. There were no effects on fetal growth, no dose-dependent pattern of external, visceral, or skeletal malformations and no toxicologically relevant increase in anatomical variations at any dose group. Based on the obtained experimental data it is concluded that dimethyltin bis(2-ethylhexyl thioglycolate) forms dimethyltin chloro-(2-ethylhexyl thioglycolate), not dimethyltin dichloride, in the stomach environment at pH 1.2, and dimethyltin bis(2-ethylhexyl thioglycolate) was not teratogenic nor fetotoxic in rats. The maternal NOAEL was 10 mg/kg/day, and the developmental NOAEL was 25 mg/kg/day, the high dose. The maternal LOAEL was 25 mg/kg/day based on decreased food consumption, lower adjusted mean body weight gain and reduced maternal thymus weight.
Struktur Populasi Gastropoda (Terebralia palustris) Di Area Ekowisata Mangrove Gampong Baro Kabupaten Aceh Jaya
Authors: Fitriani Fitriani , Suriani Mai , Bahri Samsul , Gazali Mohamad , Rahmi Mira Mauliza 
Published: February 2023

ABSTRAKEkowisata mangrove Gampong Baro mempunyai beberapa tempat yang dapat dikunjungi, bentuk dari aktivitas kunjungan ini secara langsung memberikan dampak terhadap beberapa jenis biota pada ekologi mangrove adalah jenis Gastropoda. Penelitian ini dilaksanakan pada Bulan Oktober 2021-Januari 2022 di area mangrove Gampong Baro Kabupaten Aceh Jaya Provinsi Aceh, dengan tujuan untuk mengetahui nilai kepadatan, distribusi ukuran dan pola distribusi dari Terebralia palustris. Pengambilan data dilakukan di 3 stasiun pengamatan dengan menggunakan metode transek kuadrat. Pada setiap stasiun pengamatan di pasanng plot utama ukuran 10 x 10 m untuk pengambilan data mangrove dan disetiap plot utama dibuat subplot ukuran 1 x 1 m untuk pengambilan data gastropoda. Hasil dari penelitian menunjukan bahwa kepadatan Terebralia palustris bernilai antara 4-16 ind/m2, ukuran sebaran Terebralia palustris berkisar antara 3-12,3 cm. Indeks pola distribusi sebaran adalah Id<1 yang artinya pola sebarannya merata/seragam. Hubungan kerapatan mangrove dengan kelimpahan gastropoda Terebralia palustris antar stasiun dianalisis menggunakan Regresi Linear Sederhana diperoleh nilai r= 0,9663, yang berarti memiliki korelasi yang sangat kuat antara kepadatan gastropoda Terebralia palustris dengan kepadatan mangrove
EFFICACY OF ZINC SULFIDE- CHITOSAN NANOPARTICLES AGAINST BACTERIAL DIABETIC WOUND INFECTION
Authors: Mustafa H.N.  , I. Al -Ogaidi  
Published: February 2023

This study was aimed evaluation, Zinc sulfide-chitosan nanoparticles (ZnS-chitosan NPs) as an antibacterial agent. The nanoparticles of Zinc sulfide-chitosan were synthesized using a single-step colloidal process. Different factors were optimized, which included pH, temperature, reaction time, concentrations of chitosan and Zinc chloride .The optimal conditions was achieved at pH 7, temperature 60℃, reaction time 60min, with 0.04 mg/ml of Zinc chloride, 2.5 ml 0.1mg/ml Sodium sulfide and 0.009 M chitosan. The size of ZnS-chitosan NPs size was tested by using FESEM which were 35nm, surface morphology was done by using AFM. Moreover, X-ray Diffraction (XRD) characterized the crystal structure. While the nature of functional groups present in ZnS-chitosan nanoparticles was determined by Fourier transforms infrared (FT-IR) analysis. The sensitivity of bacterial isolates to antibiotics were tested, the bacteria were more sensitive, resistant, and moderate range to ten antibiotics. Different concentrations (12.5, 25, 50, 100, 200, and 400 μg/ml) of ZnS-chitosan NPs were investigated against multidrug resistance (MDR) Staphylococcus aureus (Gram-positive bacteria) and Acinetobacter baumannii, Pseudomonas aeruginosa (Gram-negative bacteria). The minimum inhibitory concentration of ZnS-chitosan NPs against pathogenic bacteria was 100 μg /ml for Staphylococcus aureus and Acinetobacter baumannii, while 50 μg /ml for Pseudomonas aeruginosa. Cytotoxicity effects of ZnS-chitosan on normal cell lines (WRL-68) were investigated by MTT assay. The results showed that the ZnS-chitosan nanoparticles no cytotoxic effect on normal cell line.
STUDYING THE GROWTH AND PRODUCTIVITY OF SAFFRON UNDER DIFFERENT AGRICULTURE TECHNIQUES
Authors: Razan K  , R. Aziz  , K. Al-Maari  , F. Al-biski  
Published: February 2023

This study was conducted at Abi – Jarash farm, Damascus, Syria, during 2018/2019 and 2019/2020 growing seasons. The aim of this study was comparing the effect of three different cultivation techniques of saffron (Crocus sativus L.), which were soilless cultivation, within the nutrient film technique (NFT), and the technique of cultivation in substrates (mixture of peat moss- perlite), in addition to cultivation in soil. An increasing in the vegetative growth measurements was recorded with​​ cultivation saffron in the soil, compared to the cultivation without soil, within the nutrient film technology (hydroponics) ,and the technology of cultivation in the substrates (peat moss and perlite mixture)، Flowering was poor in the hydroponics technique, while non significant differences were observed among the cultivation technique in the peat moss–perlite mixture, and the cultivation in the soil in first and second seasons . Cultivation in the soil achieved a significant increase in the rate of corms multiplication (corm plant-1), and the weight of daughter corms produced from one plant, whereas, a qualitative superiority appeared within the nutrient film technique, in which the percentage of commercial corms (˃ 8 g) reached 100%, and the average weight of the produced corms was 13.65,16.07 g in first and second seasons, respectively .
THE EFFECT OF THE SYNBIOTIC ON REDUCING BODY WEIGHT, FEED CONSUMPTION, ACTIVITY AND HEALTH STATUS OF EXPERIMENTAL ANIMALS
Authors: W. F. J. Al-Fahdawy  , A. A. Alshaikh Daher  
Published: February 2023

The current study aims to demonstrate the effectiveness of the synbiotic of eukaryotic and prokaryotic probiotics on the average weights of experimental animals (male rats) per week, the weights of the fed they consume, their activity and their health status daily by dosing each group with a probiotics and synbiotic except for the two control groups (positive and negative) were used. The results showed a decrease in the weights of experimental animals that were dosed with probiotics L.GG, S.boul., L.GG+ S.boul. and the synbiotic (L.GG+ S.bou.l+Psy) even though they were fed a standard diet with adding 10%Kcal, the synbiotic group L.GG+S.boul. +Psy was the most efficient and capable in reducing the rats weight by 11.7% as compared to the positive control group (cont2). The synbiotic group was closest to the negative control group (cont1), at a rate of 4.06%, since the latter feeds on a regular standard diet only, and the decrease in the body weights of the experimental animals of the dosed groups is accompanied by a decrease in the amount feed of consumed for the group of rats that were dosed with synbiotic, reaching a decrease of 8.34% when compared with the cont2 group, while the percentage of feed consumption was 0.73% when compared with the cont1 group. All dosed groups showed an inmprovment in activity and health status compared to the both control groups.
Avifauna Diversity in and Around Kaiga in Uttara Kannada Distriet of Karnataka State
Authors: Kotangale J.P. , Ghosh T. K. 
Published: February 2023

The natural forests of Uttara Kannada district range from evergreen through dry deciduous types. The characteristic species of such forests are Tectona grandis, Xylia xylocarpa, Terminalia panniculata and Meliosma tomentosa. The diversity of avifauna was critically studied within an area of 30 km radius of Kaiga in Uttara Kannada during summer season A total of 55 varieties of birds were encountered in 14 locations during the survey, of which 7.27% were inhabitants of aquatic ecosystems. While most of the types of birds were arboreal in habit, cattle egret was recorded as most dominant species (28.75 %), followed by house crow ( 12 55 %), little egret (9.42 %) and jungle crow (8.71 %) In terms of species richness, Kaiga was very rich with 19 species of birds followed by Chendiya and Yellapur with 17 species each. Majority of the birds were omnivorous in habit preferring insects, worms and arachnids as their principal food (36.52 %) items followed by frugivorous and granivorous birds comprising 12.1 and 11.8 % respectively. Shannon-Weiner diversity index and evenness index values for the encountered birds were estimated to be 3.90 and 0.67 respectively, indicating better environment and rich diversity of the avifauna.
Processes of Enrichment of Trace Metals for High-Tech Applications in Hydrothermal Veins of the Ruhr Basin and the Rhenish Massif, Germany
Authors: Henning Sören , Graupner Torsten , Krassmann Thomas , Gäbler Hans-Eike , Goldmann Simon , Kus Jolanta , Onuk Peter 
Published: February 2023

ABSTRACTThe increasing demand for high-tech trace elements supports the need for systematic investigations of their primary occurrences. Mineralogy and trace element characteristics of hydrothermal base-metal veins from the Ruhr Basin (Ruhrgebiet) and the Rhenish Massif (Bergisches Land) in Germany were studied by energy-dispersive X-ray fluorescence mapping, laser ablation-ICP-mass spectrometry, and electron microprobe analyses. Quantitative trace element analysis proves elevated concentrations of Ge and Ga in sphalerite from the Ruhrgebiet. In addition to about 6 Mt of sphalerite-dominated ore, a potential of about 10 t of Ge is indicated to be concentrated in the Auguste Victoria and Graf-Moltke base-metal deposits in the Ruhrgebiet. Assessments on physicochemical fluid properties and metal sources using vitrinite reflectance analysis and host rock investigation indicate a genetic link between the Carboniferous carbonaceous rocks (hosting a number of coal seams) and significant trace metal enrichment in the veins. Gallium enrichment, outlining primary growth zones in ore stage 1 sphalerite, is facilitated by the alteration of Al-bearing minerals in adjacent host rocks due to intense fluid/rock interaction. Reduced Ga and very low In concentrations in ore stage 2 may reflect sealed fluid pathways or changes in the fluid properties. The high level of organic matter in the system probably supported enrichment of Ge in the hydrothermal fluids. The constantly high levels of fixation of Ge in sector zoning patterns of the sphalerite during both ore stages indicate a continuous supply. Elevated contents of Sb together with Cu, As, and Pb in sectors of the sphalerite grains point to a local enrichment of nanometer-scale inclusions of sulfosalt-like phases. Sphalerite of both districts and even of the two ore stages in the Ruhrgebiet shows variations in δ34S isotope compositions due to varying sulfur sources. Both the host rock composition and the presence of organic matter contributed to the trace metal enrichment in the Ruhrgebiet base-metal sulfides as compared to the low contents typical of base-metal ore from the Bergisches Land.
Supergene Turquoise and Associated Phosphate Minerals of the Porphyry-Lode System at Butte, Montana, USA
Authors: Eastman Kyle A. , Gammons Christopher H. , Goemann Karsten , Griffith Amanda 
Published: February 2023

ABSTRACTWeathering processes superimposed onto exhumed hydrothermal ore deposits in western North America have developed secondary mineral assemblages that inform the near-surface evolution of these systems within the context of Basin and Range extension. The occurrence of the secondary phosphate mineral turquoise [CuAl6(PO4)4(OH)8·4H2O] in the weathering profile of Laramide porphyry copper deposits is widely documented, although previous studies on the composition and distribution of turquoise are largely restricted to the archaeological literature. In this study, we use the world-class Butte porphyry-epithermal system to study the occurrence, paragenesis, and mineral chemistry of turquoise and related phosphates in the weathering profile of the deposit. Field observations, mineral textures by optical microscopy, electron microprobe analyses, and geochemical modeling show that blue, Al-endmember turquoise formed exclusively at or immediately below the pre-mining water table, within the chalcocite enrichment blanket and in the absence of significant FeIII. At higher structural levels above the pre-mining water table, green FeIII-bearing turquoise [Cu(Al,FeIII)6(PO4)4(OH)8·4H2O] is commonly intergrown with jarosite and/or tinticite at the micron scale. We show that jarosite, tinticite, and FeIII-bearing turquoise formed at the expense of pre-existing, Al-endmember turquoise after extensional faulting caused a relative lowering of the water table in the eastern fault block of the deposit. The low solubility of the FeIII-phosphates tinticite and strengite in the leach cap environment suggests that it is unlikely that these minerals formed directly from oxidized meteoric water. Electron probe microanalysis documented the presence of As and F in blue Al-endmember turquoise and Cl in green FeIII-bearing turquoise. The presence of Cl in FeIII-bearing turquoise may represent an evaporitic signal associated with basin development as the Butte district was exhumed. The paragenesis of Cu- and Fe-phosphate minerals provides another tool with which to interrogate spatial and temporal relationships in the near-surface evolution of porphyry copper systems.
Leichtbau: Datenvernetzung für additive Fertigung/Digitization of the process chain for additively manufactured aluminum lightweight components – Data fabric for lightweight design with AM
Authors: Huschka Martin , Hoschke Klaus , Dlugosch Michael , Patil Sankalp , Schweizer Christoph , Friedmann Valerie , Trelles Garcia Elena , Preußner Johannes , Klotz Ulrich , Tiberto Dario 
Published: February 2023

Additive Fertigung (AM) bietet aufgrund großer Designfreiheiten ein enormes Leichtbaupotenzial. Vom Rohmaterial bis zum fertigen Bauteil durchlaufen Zwischenprodukte meist mehrere Wertschöpfungsstufen und Unternehmen. Wissensverluste zwischen den Wertschöpfungsstufen müssen verhindert werden, um durchgängig eine genaue Kenntnis des Werkstoffs, des Bauteils und des Fertigungsprozesses zu erhalten. So lassen sich Design und Produktion in wirtschaftlicher sowie ökologischer Hinsicht optimieren.

Additive manufacturing (AM) offers enormous lightweight potential due to great design freedom. From the raw material to the finished component, the intermediate products usually pass through several companies. For lightweight design, knowledge losses in the value chain must be prevented in order to obtain the most accurate possible knowledge of the material, the component and the manufacturing process. In this way, design and production can be further optimized in economic and ecological terms.
Ein Paradigmenwechsel für die industrielle Produktion/A paradigm shift for industrial production – Software-defined manufacturing
Authors: Neubauer Michael , Frick Florian , Ellwein Carsten , Lechler Armin , Verl Alexander 
Published: February 2023

Software-defined manufacturing (SDM) überträgt den Ansatz der Trennung von Anwendungen und unterlagerten Systemen, welcher ein entscheidendes Paradigma und Erfolgsfaktor für die Digitalisierung in vielen Branchen ist, auf die industrielle Produktion. Neben einer gesteigerten Integration von IT und OT können so die Produktionsprozesse einer gesamten Fabrik dynamisch durch Software anpasst werden. Ziel dieses Beitrags ist es, den SDM-Ansatz und die zur Umsetzung notwendigen Konzepte hinsichtlich technologischer Infrastruktur und Abstraktionsschicht vorzustellen. Anhand von zwei Use Cases werden die sich daraus ergebenden Potenziale aufgezeigt.

Software-defined manufacturing (SDM) takes the approach of separating applications from underlying systems to industrial production. This paradigm has been the key success factor for digitization in many sectors. Thus, the production processes of a factory can be dynamically adapted by software. This paper aims to present the SDM approach as well as the required measures for its implementation with respect to technological infrastructure and abstraction layer. Two use cases demonstrate the opportunities of SDM.
Bearbeitungsintensitäten im Tauchgleitschleifen/Process intensities during stream finishing
Authors: Neuenfeldt Patrick , Brennenstuhl Felix , Schulze Volker 
Published: February 2023

Das Tauchgleitschleifen ist ein Verfahren mit geführtem Werkstück und bietet sich besonders für die Bearbeitung von Maschinenelementen an. Dabei hat es sich zur effizienten Glättung von Verzahnungen bewährt. Zur Lebensdauererhöhung von Zahnrädern wird zudem häufig ein Strahlprozess zur Induzierung von Druckeigenspannungen durchgeführt. Dieser Beitrag behandelt die Betrachtung der Intensitäten an einem Stirnrad durch Analyse der Durchbiegung von Metallstreifen abgeleitet vom Almensystem.

The stream finishing process is a mass finishing process with a guided workpiece and particularly suited for processing machine parts. It is mainly used for the efficient smoothing of toothing. To increase the service life of gears, a blasting process is often conducted to induce compressive residual stresses. This paper investigates local intensities during stream finishing on a spur gear by analyzing the bending of metal strips derived from the Almen system.
Verschleißmodellierung von cBN-Schleifscheiben/Wear modeling of cBN grinding wheels
Authors: Bredthauer Marc , Mattfeld Patrick , Barth Sebastian , Bergs Thomas 
Published: February 2023

Ein großer Teil der beim Schleifen erzeugten Energie wird in Wärme umgewandelt. Da nicht die gesamte Wärme durch den Kühlschmierstoff abgeführt werden kann, können thermisch bedingte Bauteildefekte auftreten. Die Wärmestromaufteilung wird durch die verschleißbedingte Veränderung der Schleifscheibentopografie beeinflusst. In dieser Arbeit wird eine Methodik zur Entwicklung eines Verschleißmodells vorgestellt, das die verschleißbedingte Topografieänderung von galvanisch gebundenen cBN-Schleifscheiben erklären und vorhersagen kann.

A large amount of the energy generated during grinding is converted into heat. As the cooling lubricant cannot dissipate all of the heat, thermally induced component defects can occur. The heat flux distribution is influenced by the wear-related change in the grinding wheel topography. This paper presents a method for developing a wear model to explain and predict the wear-induced topography change of electroplated cBN grinding wheels.
Mikrostrukturierung von Bohrungsmantelflächen/Microstructuring of bore shell surfaces
Authors: Funke Roman , Schubert Andreas , Schmidt Torsten , Edelmann Jan 
Published: February 2023

Eine gezielte Mikrostrukturierung der Oberfläche von Bauteilen kann deren Funktion im Betrieb maßgeblich verbessern. Anwendung finden Mikrostrukturen beispielsweise in den Bereichen Tribologie, Thermodynamik sowie der Füge- und Beschichtungstechnik. Eines der Ziele der Produktionstechnik besteht in der Entwicklung hocheffizienter und robuster Fertigungsverfahren zur Mikrostrukturierung von Oberflächen für industrielle Anwendungen. Es werden zwei Fertigungsverfahren zur Erzeugung näpfchenförmiger Mikrostrukturen auf Bohrungsmantelflächen vorgestellt und diskutiert.

Microstructuring of the surface of components can significantly improve their function. Applications of microstructures can be found, for example, in the fields of tribology, thermodynamics, and joining and coating technology. One of the goals of production engineering is to develop highly efficient and robust manufacturing processes for the microstructuring of surfaces for industrial applications. Two manufacturing processes for the generation of dimple-shaped microstructures on bore shell surfaces are presented and discussed.