bluuebunny/crossref_metadata_2025 huggingface dataset:
Conservation of plant biodiversity by biotechnology methods
Authors: Romadanova N. V. , Kushnarenko S. V.
Published: April 2023

Several methods of plant preservation are currently used in the Republic of Kazakhstan: 1) field gene banks in natural growing areas and pomological collections; 2) preservation of seeds at +4°С, –18°С, and –196°С; 3) сold storage of in vitro shoots at +4°С and +10 ± 2°С; 4) cryopreservation of plant tissues and organs at –196°C; 5) preservation of plant DNA at –80°C.Ex situ field collections of plants in Kazakhstan are maintained in botanical gardens of the Republic, arboretums, pomological gardens, nurseries, peasant and farm enterprises, and personal plots. The largest collection of fruit and berry plants is located in the Pomological Garden and includes about 4 thousand varieties, more than 40 thousand hybrids and wild forms of various crops.The Republic of Kazakhstan has about 42,000 accessions in the seed collection. The cereal crop collection is mainly concentrated in the Kazakh Research Institute of Agriculture and Plant Growing – 1/3 of the national genetic resources. The main seed collection of vegetable crops and potatoes (14,700 accessions) is held by the Kazakh Research Institute of Potato and Vegetable Growing. Collections are also available at the Institute of Botany and Phytointroduction and in the Institute of Plant Biology and Biotechnology (IPBB), with the storage mode of + 4°C and –18°C. IPBB also uses cryopreservation technology at –196°C for seed storage.The main in vitro collection of Kazakhstan is kept at the IPBB at + 4°С and +10 ± 2°С; it includes more than 140 accessions of various fruit, berry, nut, vegetable, ornamental, and woody crops, grapes, potatoes, etc. A cryogenic collection of seeds, shoot tips, dormant buds, and embryonic axes in liquid nitrogen (–196°C) is found only in IPBB. The collection includes more than 700 accessions.
The effect of weather conditions on the seasonal rhythm of plant development of Amur cork tree (Phellodendron amurenserupr.) in the forest-steppe of the Ob region
Authors: Likhenko N. N. , Kapko T. N. , Epanchintseva A. P. , Likhenko I. E.
Published: April 2023

Background. Amur cork tree is a valuable woody plant of great economic importance. Its bark, liber, leaves, and fruits are successfully used in medicine and cosmetology. This tree is very ornamental and serves as is a good honey plant. It can be a potential source of industrial cork. Due to its properties and relative unpretentiousness, Amur cork tree may be of interest for introduction. In this regard, the aim of the research was to study the peculiarities of the influence of weather conditions on the seasonal rhythm of plant development for Amur cork tree (Phellodendron amurense Rupr.) under the conditions of the foreststeppe in the Ob region.Materials and methods. Thirty two Amur cork trees were used as the material for the study. These trees were successfully introduced in the forest-steppe of the Ob region. Phenological observations to evaluate the rhythm of seasonal growth were carried out according to the methodological recommendations of I. D. Yurkevich and coauthors. The Pearson correlation coefficient (r) was used to identify the dependence of the rhythm of seasonal growth on weather conditions.Results. The plants of Amur cork tree were found to be successfully adapted to the conditions of the arboretum of the Siberian Research Institute of Plant Production and Breeding. It was shown that in the year with the highest sum of effective temperatures (2020), the duration of interphase periods was on average 2 days shorter than in other years. At the same time, in the coldest year (2018), the plants did not have time to complete their leaf fall before the snow cover appeared. The vegetation of Amur cork tree was observed to start in mid-May. The completion of the growing season varies greatly from year to year. Conclusion. It was established that the seasonal development of Amur cork tree in the forest-steppe of the Ob region corresponded to the features specific to the development of this species within its natural range.
Mineral composition of bread wheat lines with introgressions of alien genetic material
Authors: Orlovskaya O. A. , Vakula S. I. , Khotyleva L. V. , Kilchevsky A. V.
Published: April 2023

Background. Modern bread wheat (Triticum aestivum L.) cultivars developed mainly to increase productivity often contain low concentrations of minerals in their grain. Wild and primitive wheats demonstrate rich genetic diversity, including the content of minerals in the grain, and can be used to improve the wheat gene pool for this trait. The aim of this work was to study the mineral composition in the grain of bread wheat lines with introgressions of the genetic material from Triticum L. spp.Materials and methods. We studied parental spring bread wheat cultivars, accessions of tetraploid and hexaploid Triticum spp., and 20 introgressive lines obtained on their basis in 2018 and 2020. Concentrations of macro- (K, P, Ca, and Mg) and micronutrients (Zn, Fe, Cu, and Mn) were measured using atomic emission spectrometry with inductively coupled plasma, and total protein content in wheat grain according to GOST 10846-91. The data were processed using the Statistica 10.0 and MS Excel software packages.Results and conclusion. The content of minerals in the grain of Triticum spp. was higher than in T. aestivum cultivars (the twoyear average difference was 1,02 to 2,13-fold, depending on the studied mineral). Most of the lines with alien genetic material exceeded their parent bread wheat cultivars in Zn, Fe, Cu and Mn content and came close to them in the levels of N, P, Mg and K. ANOVA established a statistically significant impact of the genotype, environment, and genotype × environment interaction on the variation of the grain macro- and micronutrient content. Lines with a consistently high concentration of grain minerals and high productivity were identified. These lines are of interest for wheat breeding for grain quality.
A study of a complex of bioactive compounds in the fruits of promising blue honeysuckle (Lonicera caeruleal.) cultivars
Authors: Perova I. B. , Eller K. I. , Gerasimov M. A. , Baturina V. A. , Akimov M. Yu. , Akimova O. M. , Mironov A. M. , Koltsov V. A.
Published: April 2023

Background. Blue honeysuckle (Lonicera caerulea L.) is a valuable source of bioactive compounds (BAC) of polyphenolic nature and rare for horticultural berries iridoids, which have antioxidant, anti-inflammatory, antimicrobial and other properties and are widely used in the food, medical and cosmetic industries.Materials and methods. The berries of 20 released honeysuckle cultivars of Russian, Canadian and U.S. origin, reproduced at the I.V. Michurin Federal Science Center in Tambov Province, were studied for the content of the main BAC groups using modern methods (spectrophotometry, HPLC-UV, HPLC-RID, and HPLC-DAD-MS).Results and discussion. The main BAC groups (the content and profile of anthocyanins, proanthocyanidins, flavonols and flavones, hydroxycinnamic acids (HCA), iridoids, and organic acids) as well as mono- and disaccharides were studied in detail. A comparative study of the biological value of domestic and foreign honeysuckle cultivars was carried out.Conclusions. The study resulted in identifying the most promising cultivars of honeysuckle according to the content of the main BAC groups.
Effects of nitrogen, phosphorus, and potassium base fertilizers on growth and yield of Taraxacum kok-saghyz Rodin
Authors: Zhang W. , Zheng F. , Wei D. , Shen G. , Zeng X. , Kon’kova N. G.
Published: April 2023

Taraxacum kok-saghyz (TKS) is a promising natural rubber plant. In the current study we investigated effects of nitrogen, phosphorus, and potassium base fertilizers on growth and yield of TKS through the field experiments. We found that appropriate application of nitrogen, phosphorus, and potassium base fertilizers can significantly increase root, rubber and total sugar yield of TKS. The TKS rubber yield enhanced significantly when the amount of nitrogen and phosphorus, potassium increased accordingly to 107.2, 10.5 and 35.3 g m–2. Maximum accumulation of rubber in the TSK roots is caused by application of potassium fertilizer.According to the obtained results the recommended amount of base fertilizers under conditions of Harbin Experimental Station (N45.592729°, E126.581668°) is 107.2 g m–2 of urea, 43.4 g m–2 of calcium superphosphate, 10.5 g m–2 of potassium chloride.
Assessment of source material for malting barley breeding
Authors: Yusova O. A. , Nikolaev P. N. , Kuzmich M. A. , Kuzmich L. S.
Published: April 2023

Background. The objective of the research was to identify promising genotypes of malting barley in the source material developed at Omsk Agricultural Scientific Center.Material and methods. The studies were carried out from 2017 to 2020. in the southern forest-steppe of Western Siberia. The target material included 13 lines: Sasha × Getman (2 lines), Sasha × Margret, Podarok Sibiri × Getman (3 lines), Omsky 95 × Beatrice (3 lines), Omsky 95 × Despina, Omsky 95 × Viva, Omsky 100 × Margret, and Omsky 90 × Margret. Biochemical assessment of grain quality for brewing qualities was carried out jointly with Nemchinovka Federal Research Center according to GOST 5060-86 (Bаrley for brewing. Specifications).Results and discussion. The most promising were the lines demonstrating increased yield (5.39–6.21 t/ha) and reduced mass fraction of protein (11.39–11.92%): Sasha × Getman (1), Sasha × Getman (2), Omsky 90 × Margret, Omsky 95 × Beatrice (2), Omsky 95 × Beatrice (3), and Omsky 95 × Despina. Besides, these lines had a set of the following brewing characteristics: grain evenness (98.7–99.95); grain filminess (9.3–9.9%), 1000 grain weight (55.6–57.0 g), grain extractivity (78.1 and 78.9%), mass fraction of starch (55,35–56.83%), color (0.15–0.30 EBC units), and malt vitreousness (0.0–3.0%).Conclusion., The lines Sasha × Getman (1) and (2), Omsky 90 × Margret, Omsky 95 × Beatrice (2) and (3), Omsky 95 × Despina are recommended for further research.
The effect of cryopreservation in liquid nitrogen on the viability of flax seeds
Authors: Pavlov An. V. , Porokhovinova E. A. , Brutch N. B. , Pavlov Al. V. , Verzhuk V. G.
Published: April 2023

Background. A promising technique for preserving plant genetic resources is cryopreservation of seeds in liquid nitrogen at –196°C. The lack of information on cryopreservation of flax seeds and on the effect of liquid nitrogen on their viability makes this work relevant for the conservation of valuable flax germplasm.Materials and methods. Seeds of the fiber flax cultivar ‘Orshansky 2’ were used in the experiment. The experiment was carried out in 2 replications; each of them included 6 options. In options 1 and 2, the seeds were stored in paper bags at room temperature (1 – control, seeds without treatment; 2 – treated with a biodegradable polymer of 3-hydroxybutyric acid [P(3GB)]). In options 3, 4, 5 and 6, the seeds were stored in liquid nitrogen without treatment and with P(3GB) treatment (in 3 and 4 in gauze packaging, and in 5 and 6 in laminated foil bags).Results. Laboratory-based germination energy and viability of control seeds were the same in all options of the experiment (99%), and field viability averaged 83%. The lowest germination energy, laboratory-based and field germination capacity were observed after storage in laminated bags, without P(3HB) processing: option 5. stage II (79%); option 5, stage III (74%), and with P(3HB): processing: option 6, stage II (78%); option 6, stage III (82%). A two-factor analysis of variance showed that liquid nitrogen had significant effect on laboratory germination energy, field germination capacity, laboratory germination energy and capacity after 6 months of storage at room temperature: the effect size was 42, 11, 31, and 24%, respectively, while treatment with P(3HB) had no significant effect on any of the options of the experiment with its application.Conclusion. Flax seeds tolerated direct immersion in liquid nitrogen (t = –196°C) best of all in gauze packaging. The biodegradable polymer P(3HB) did not produce a significant effect on seed viability in any option.
Metabolismo y nutrición del paciente en estado crítico
Authors: Savino Patricia , Patiño José Félix
Published: April 2023

El modo de soporte nutricional en el paciente en estado crítico es motivo de controversia y abundan las opiniones al respecto. Algunos consideran las demandas calóricas como el objetivo principal de la nutrición en el estado crítico con base en un supuesto alto grado de hipermetabolismo, pero hemos demostrado que tan elevado hipermetabolismo realmente no existe y que, primordialmente, se deben atender las necesidades proteicas en esta condición que es altamente catabólica. El clima hormonal y humoral del estado crítico lleva a que buena parte de las necesidades calóricas sean atendidas por degradación de la proteína corporal. En el estado crítico existe una especie de dependencia de la proteína. El estado clínico del paciente en estrés agudo hace difícil adelantar investigaciones prospectivas y de asignación aleatoria. Una característica del estado crítico es la variabilidad y labilidad de las condiciones fisiopatológicas. En el Servicio de Soporte Metabólico y Nutricional del Hospital Universitario Fundación Santa Fe de Bogotá, desde hace muchos años, se reconoce la particular importancia del aporte proteico y se reduce el aporte calórico en forma de carbohidratos a no más de 600 kcal en 24 horas (150-200 g/24 horas), como fundamento para elegir el soporte nutricional, sea parenteral, entérico o mixto. En este artículo se revisan los fundamentos que llevan a considerar la proteína como el nutriente fundamental para el paciente en estado crítico
Relación entre gastrectomía de tipo manga y reflujo gastroesofágico
Authors: Morales Cristiam Alexander , Sánchez Jonathan Alexis , Sánchez Brayan David , Vergnaud Jean Pierre , Vásquez Jesús , Toro Juan Pablo
Published: April 2023

La enfermedad por reflujo gastroesofágico es una entidad muy frecuente en la población general, con secuelas significativas, como esofagitis péptica, esófago de Barrett y carcinoma de esófago. La obesidad, por su parte, es una condición que se ha incrementado en el mundo en las últimas tres décadas y es uno de los principales factores de riesgo para reflujo gastroesofágico y esófago de Barrett. En los últimos años, la cirugía bariátrica se ha convertido en el mejor tratamiento para la obesidad mórbida y algunas de sus técnicas son reconocidas por ser procedimientos esencialmente antirreflujo como, por ejemplo, la derivación gástrica laparoscópica en Y de Roux. Sin embargo, la relación entre la manga gástrica por laparoscopia y el reflujo gastroesofágico, sigue siendo un tema controvertido. El propósito de esta revisión es presentar la información disponible sobre los mecanismos fisiopatológicos asociados a la presentación de reflujo gastroesofágico después de manga gástrica por laparoscopia y la influencia de la técnica quirúrgica en la prevención de esta complicación.
Índice de shock como factor predictor de mortalidad en el paciente con trauma penetrante de tórax
Authors: Charry José D. , Bermeo Juan M. , Montoya Kevin F. , Calle-Toro Juan S. , Núñez Luis Ramiro , Poveda Gustavo
Published: April 2023

Introducción. El trauma es considerado un problema de salud pública. Es una de las causas de mayor discapacidad y mortalidad en Latinoamérica y Colombia no es la excepción. El objetivo de este estudio fue evaluar si el índice de shock, resultado de la frecuencia cardiaca sobre la tensión arterial sistólica, es útil para predecir la mortalidad a 24 horas, en pacientes con trauma penetrante de tórax atendidos en el servicio de urgencias de un hospital universitario de Colombia. Materiales y métodos. Se construyó una base de datos de pacientes con trauma de tórax que fueron hospitalizados entre enero de 2013 y diciembre de 2013. Se evaluaron las variables y se determinó el resultado según el índice de shock, generando una variable dicotómica con dos grupos: grupo A, con un índice menor de 0,9, y grupo B, con uno mayor de 0,9; se hizo un análisis univariado. Se calcularon medidas de tendencia central y dispersión para las variables continuas. Resultados. Se analizaron 170 pacientes, 75,9 % (129) presentaron índice de shock menor de 0,9 y, 24,1 % (41), uno mayor de 0,9. La media de la edad para el grupo A fue de 32,4 años y, para el grupo B, de 35,4 años. La media del índice de gravedad de la lesión (Injury Severity Score, ISS) para el grupo A fue de 11,3 y, en el grupo B, de 20,6. La mortalidad a las 24 horas después de la lesión en el grupo A fue de 13,2 % y, en el grupo B, de 60,9 %. Conclusión. Un índice de shock inicial superior a 0,9 supone un peor pronóstico a las 24 horas después de la lesión. Predice la mortalidad en el paciente con trauma penetrante de tórax en el servicio de urgencias de un hospital universitario de Colombia. El índice de shock es una escala fisiológica que se puede utilizar rápidamente en todos los pacientes.
Apendicitis aguda izquierda: presentación infrecuente de una enfermedad frecuente. Revisión de la literatura y reporte de un caso
Authors: Arévalo Caterin , Owen Sáenz Katherine , Tabares Carlos , Bernal Felipe , Borráez Bernardo A.
Published: April 2023

La apendicitis aguda izquierda es infrecuente y requiere una alta sospecha diagnóstica, estudios imaginológicos complementarios y un tratamiento quirúrgico definitivo. El retraso en el diagnóstico conlleva múltiples complicaciones y dificultades durante el procedimiento quirúrgico. Se presenta una revisión de la literatura científica a propósito de un caso clínico de apendicitis izquierda aguda secundaria a una malrotación intestinal, con sus manifestaciones clínicas, estudios diagnósticos y tratamiento. Introducción La apendicitis aguda es la enfermedad quirúrgica más comúnmente diagnosticada en el servicio de urgencias 1 . Presenta manifestaciones atípicas en un tercio de los pacientes, que constituyen un reto diagnóstico para los médicos generales en urgencias y los cirujanos generales 2 . El diagnóstico de las presentaciones infrecuentes requieren de una alta sospecha diagnóstica, estudios imaginológicos complementarios y un abordaje quirúrgico preferiblemente laparoscópico, que facilite la evaluación de toda la cavidad abdominal y permita un tratamiento definitivo 3 . La apendicitis aguda izquierda ocurre en tres tipos de variación anatómica: apéndice cecal largo en un ciego derecho que cruza la cavidad abdominal, situs inversus y malrotación intestinal 4. Se presenta un caso clínico de apendicitis aguda izquierda secundario a malrotación intestinal, con su presentación clínica, estudios complementarios y tratamiento.
School Disruptions Exacerbated Inequality in High School Completion
Authors: Liu Ran
Published: April 2023

Using school-month-level learning mode data and high school completion rates across three school years from 429 Wisconsin public high schools, this study examines the impact of disruptions to in-person instruction during the COVID-19 pandemic on high school completion rates, with a focus on socioeconomic disparities. Findings reveal that a longer time in virtual or hybrid learning mode in 2020–21 decreases overall school completion rates and increases the within-school gap in completion rates between economically disadvantaged and non-disadvantaged students. This study provides further evidence of the unequal impact of the pandemic and calls for initiatives to support disadvantaged students during school disruptions.
Testing an Explanation for Summer Learning Loss: Differential Examinee Effort Between Spring and Fall
Authors: Kuhfeld Megan , Soland James , Register Brennan , McEachin Andrew
Published: April 2023

Summer learning loss is a perennial concern for educators and parents alike. However, researchers have recently questioned whether summer learning loss is just a statistical artifact driven by how achievement is measured across the school year. In this study, we empirically investigated a plausible critique of summer learning loss research, namely that students do not put forth their best effort on the fall test compared with the spring test. While we cannot conclude based on our findings that students do in fact lose ground during the summer, we did not find evidence that seasonal differences in test effort are a main driver of summer learning patterns estimated with MAP Growth assessments.
Impact of the Stress Hyperglycemia Ratio on In-Hospital and Long-Term Poor Prognosis in Patients with Acute Myocarditis
Authors: Zhao Yan , Yang Jie , Chen Jing , Yang Xu , Zhang Wei , Lv Naqiang , Tan Huiqiong , Tang Yi-Da
Published: April 2023

Background: Few studies have focused on the impact of stress hyperglycemia on adverse outcomes in patients with acute myocarditis. We conducted the present study to assess the association between the stress hyperglycemia ratio (SHR) and poor prognosis in patients with acute myocarditis. Methods: From 2006 to 2020, 185 patients with acute myocarditis were enrolled. The SHR was defined as glucose at admission divided by estimated average glucose ([(1.59 × HbA1c %) – 2.59], glycated hemoglobin [HbA1c]). Participants were divided into two groups according to their SHR values. The primary endpoint was defined as in-hospital major adverse cardiovascular events (MACE), including death, heart transplantation, the need for mechanical circulatory support (MCS), and transfer to the intensive care unit (ICU). The secondary endpoint was defined as long-term MACE. Results: Subjects in the higher SHR group had more serious conditions, including lower systolic blood pressure, higher heart rate, higher white blood cell count, higher levels of alanine transaminase, troponin I, and C-reactive protein, and worse cardiac function. Multivariate logistic analysis showed that SHR >1.12 (hazard ratio (HR): 3.946, 95% confidence interval (CI): 1.098–14.182; p = 0.035) was independently associated with in-hospital MACE in patients with acute myocarditis. Kaplan-Meier survival analysis and multivariate Cox analysis suggested that an SHR >1.39 (HR: 1.931, 95% CI: 0.323–2.682; p = 0.895) was not significantly associated with long-term prognosis. Conclusions: SHR was independently associated with in-hospital adverse outcomes in patients with acute myocarditis but not with long-term prognosis.
A Real-World Analysis of Post-Marketing Surveillance Data Assessing the Incidence of Hyperkalemia or Acute Kidney Injury in Patients on Angiotensin-Converting Enzyme Inhibitors Versus Angiotensin-Receptor Blockers
Authors: Wang Yining , Ren Qidong , Luo HuiTing , Chen Gang , Zhao Bin , Li Xuemei
Published: April 2023

Background: The widely used Renin-angiotensin-aldosterone system inhibitor (RASI) may increase the risk of hyperkalemia and acute kidney injury (AKI). We aimed to analyze the RASI-related AKI or hyperkalemia reported in the Food and Drug Administration’s Adverse Event Reporting System (FAERS) database to optimize patients’ treatment and provide a reference for a clinically safe and rational prescription. Methods: We obtained data in FAERS recorded from January 2004 to December 2020. Disproportionality analysis and Bayesian analysis were used in data mining to screen the suspected AKI or hyperkalemia after RASI. The time to onset, hospitalization, and prognosis of RASI-associated AKI or hyperkalemia were also investigated. Results: We identified 11,301 RASI-related adverse events (AEs) of hyperkalemia and AKI in the FAERS database; 4997 were due to Angiotensin-converting enzyme inhibitors (ACEIs), 5658 were due to angiotensin receptor blockers (ARBs), and 646 were due to the combination of ACEI and ARB. AKI was more commonly reported in patients with ARB (78.42%) than ACEI users (57.27%). Hyperkalemia cases were reported more in ACEI users (28.70%) than ARB users (14.14%). The median time to onset of RAS-associated AKI was 135.0 (17.0–620.0) days. RASI-associated hyperkalemia occurred relatively later in ACEI users, with a median onset time of 261.0 (43.0–1097.7) days, compared with that of 200.5 (52.0–636.0) days in ARB users (p < 0.001). Among all AEs, 72.39% of cases received hospitalization. Death occurred in 6.3% of the renal AE cases. The elderly and heart failure were potential risk factors for death in patients who developed RASI-associated renal AEs, with an increased Odds Ratio (OR) compared with younger age (OR = 1.32) and hypertension patients (OR = 2.55). Based on the criteria of the four algorithms, the ACEI and ARB combination further increased the incidence of AKI and hyperkalemia, demonstrating the highest Reporting Odds Ratios (RORs), Proportional Reporting Ratios (PRRs) and Empirical Bayesian Geometric Average (EBGMs). Conclusions: Patients who indicated RASI for heart failure demonstrated a higher death risk when AEs occurred. ACEI combined with ARB can increase the incidence of hyperkalemia and AKI. Careful and individualized management is necessary.
New Concepts on the Pathophysiology of Acute Coronary Syndrome
Authors: Yuan Deqiang , Chu Jiapeng , Qian Jun , Lin Hao , Zhu Guoqi , Chen Fei , Liu Xuebo
Published: April 2023

Acute coronary syndrome (ACS) is the most severe form of ischemic heart disease. Although it is caused by atherosclerotic plaque thrombosis or nonatherosclerotic causes, its pathophysiological mechanism of ACS is not fully understood, and its concept is constantly updated and developed. At present, the main pathophysiological mechanisms include plaque rupture, plaque erosion, calcified nodules (CN) and non-atherosclerotic causes such as coronary vasospasm and myocardial bridging (MB). These mechanisms may overlap and coexist in some ACS patients. Therefore, the pathophysiological mechanism of ACS is complex, and is of great significance for the diagnosis and treatment of ACS. This review will discuss the pathophysiological mechanisms of ACS to provide new thoughts on the pathogenesis, diagnosis and treatment of ACS.
An integrated framework for classification and selection of stocks for portfolio construction: Evidence from NSE, India
Authors:   Department of Management Studies, NIT, Durgapur, India, Gupta Sayan , Bandyopadhyay Gautam ,   Department of Management Studies, NIT, Durgapur, India, Biswas Sanjib ,   Department of Management Studies, NIT, Durgapur, India, Mitra Arup ,   Department of Management Studies, MAKAUT, Haringhata, India
Published: April 2023

Investment extortion in the stock market is a crucial aspect considered by the investors. Therefore, investors implemented different strategies. This study was intended at constructing an investment portfolio (IP) of stocks within the NSE 100 listed companies of Non-parametric nature, fulfilling the basic premise of portfolio making that is, reducing risks while yielding an attractive return higher than any other instrument for the investors. Using DP omnibus test, the desired sample of companies following the non-normal distribution was achieved. Using financial beta, we have selected the outcome based on the nature of their ‘return’ and ‘risk'. We introduce TOPSIS (Technique for order of performance by similarity to ideal solution), a multi-criteria decision-making process (MCDM) to study the profitability of stocks, rank wise for each year, and finally, the Bayes portfolio model help to select the overall profitability associate with low risk for the construction of the portfolio.
استخدام جهاز مساعد وتأثيره في تعليم مهارة الدوران الروسي على جهاز حصان الحلق للجمناستك الفني للناشئين
Authors: جمال عبدالله , شهاب غادة مؤيد
Published: April 2023

هدف البحث الى معرفة استخدام جهاز مساعد وتأثيره في تعليم مهارة الدوران الروسي على جهاز حصان الحلق فرض البحث ان استخدام الجهاز المساعد تأثير ايجابي في تعليم مهارة الدوران الروسي على جهاز حصان الحلق استعمل الباحثين المنهج التجريبي (بتصميم المجموعة الواحدة ذو الاختبارين القبلي والبعدي) لملائمته طبيعة المشكلة المراد حلها. اما مجتمع البحث فتمثل (6) لاعبين لمركز الموهبة الرياضية للجمناستك وتتراوح اعمار المجموعة وهي فئة الناشئين من (9-13) سنة ، وبنسبة  تحددت (60%). استنتج الباحثون ان لاستخدام الجهاز المساعد تأثير في تعليم مهارة الدوران الروسي على جهاز حصان الحلق ، اهم التوصيات. ضرورة استخدام الأجهزة والادوات المساعدة في تعليم مهارة الدوران الروسي على جهاز حصان الحلق
تأثير تمرينات خاصة بجهاز مصمم (M.R.G) لتأهيل اصابات الفقرات القطنية ودرجة الالم لرافعي الاثقال المتقدمين
Authors: عبد النبي محمد محمد
Published: April 2023

يتعرض الرياضي أثناء التدريب وخاصة الجهاز الحركي الى احمال مختلفة تسلط جهداً على الجسم، ولأجل ارجاع المصاب الى حالته الطبيعية ولضمان امكانية استمراره في التدريب ارتأى الباحث تناول هذه المشكلة واعداد منهج علاجي يتضمن تمرينات خاصة بجهاز (M.R.G) المصمم لتأهيل رياضي ( رفع الاثقال) المصابين بإلام اسفل الظهر المزمنة (في الفقرات القطنية) والتي قد تسهم في تحديد هذه الالام مما يتيح لممارسي الفعاليات حيث يهدف الباحثان الى تصميم جهاز تدريبي لتأهيل إصابات الفقرات القطنية من خلال تمرينات خاصة للاعبي فعالية رفع الاثقال في واسط, وتركزت مشكلة البحث بإصابات الفقرات القطنية التي تواجه اللاعبين في النشاط المذكور الذي يمتاز بكثرة الإصابات وتكرارها اثر الاوزان والاحمال التدريبية التي تطبق في الوحدات التدريبية مما يستدي العمل على تطوير أساليب تأهيل هذه الإصابات بمستوى يفوق نتائج الأجهزة الخاصة  بالتأهيل في المراكز التأهيلية, ولهذا عمل الباحثان على تصميم جهاز مخصص لإصابات الفقرات القطنية وافترض الباحثان وجود فروق ذات دلالة إحصائية بين الاختبار القبلي والبعدي للمجموعة التأهيلية ولصالح الاختبار البعدي, استعمل الباحثان المنهج التجريبي بتصميم المجموعة الواحدة ذات الاختبار القبلي والبعدي وتم اختيار العينة بالطريقة العمدية من اللاعبين المصابين في اندية محافظة واسط, وتم تطبيق التمرينات التأهيلية على اللاعبين المصابين، واحتوى الفصل الرابع على استخدام المعالجات الإحصائية المناسبة التي حصل عليها الباحثان ثم مناقشتها وفي الفصل الخامس توصل الباحثان الى عدة استنتاجات منها ان التمرينات بالجهاز المصمم اسهمت التمرينات التأهيلية في خفض درجة الالم وازالته وان للتمرينات التأهيلية على الجهاز المصمم تأثير ايجابي في سرعة عودة اللاعبين المصابين الى ممارس النشاط المحدد.
بناء وتطبيق مقياس الابتكارية الانفعالية لدى لاعبي التايكواندو في محافظة نينوى
Authors: خليل جرجس ايلاف
Published: April 2023

هدف البحث الحالي الى بناء وتطبيق مقياس الابتكارية الانفعالية لدى لاعبي التايكواندو في محافظة نينوى. والتعرف على درجة الابتكارية الانفعالية لدى لاعبي التايكوندو في محافظة نينوى. والتعرف على الفروق في الابتكارية الانفعالية لدى لاعبي التايكوندو في محافظة نينوى تبعاً لمتغير (فئة اللاعبين، نوع المشاركة الرياضية، العمر التدريبي).
استخدم الباحثان المنهج الوصفي بالأسلوب المسحي والارتباطي. وتكونت عينة البحث الأساسية على (180) لاعب تايكواندو لبعض الأندية الرياضية في محافظة نينوى. ولتحقيق اهداف البحث تطلب بناء وتطبيق مقياس الابتكارية الانفعالية بأبعاده والتحقق من صدقه وثباته. إذ تكون المقياس من (32) فقرة موزعة على أربعة ابعاد وهي (الاستعداد الانفعالي، الجدة الانفعالية، الاصالة الانفعالية، الفاعلية الانفعالية) ولكل بعد (8) فقرات، تكون اقل درجة للمقياس (32) واعلى درجة له (160). وفي معالجة البيانات احصائياً تم استخدام النسبة المئوية. الوسط الحسابي. الانحراف المعياري. معامل الارتباط البسيط (بيرسون). معادلة ألفا كرونباخ. اختبار(ت). تحليل التباين باتجاه واحد. اختبار أقل فرق معنوي L.S.D. والمتوسط الفرضي. واستنتج الباحثان الى فاعلية مقياس الابتكارية الانفعالية لدى لاعبي التايكواندو في محافظة نينوى وقدرته على التشخيص عند استخدامه كوسيلة للقياس. وكذلك وجود تباين في ترتيب أبعاد الابتكارية الانفعالية لدى لاعبي التايكواندو في محافظة نينوى على وفق مقياس الابتكارية الانفعالية.
علاقة بعض المتغيرات البايوميكانيكية لأداء الضربة اللولبية الأمامية بالدقة لدى لاعبي تنس الطاولة
Authors: طلال جمال
Published: April 2023

هدف البحث إلى التعرف على قيم بعض المتغيرات البايوميكانيكية للضربة اللولبية الامامية في تنس الطاولة،  التعرف على قيم الدقة للضربة اللولبية الامامية في تنس الطاولة ، التعرف على العلاقة بين قيم بعض المتغيرات البايوميكانيكية للضربة اللولبية الامامية مع الدقة في تنس الطاولة .
استخدم الباحث المنهج الوصفي وذلك لملائمته طبيعة البحث، أما عينة البحث تم اختيار عينة البحث بالطريقة العمدية من لاعبين أندية الدرجة الممتازة فئة المتقدمين لتنس الطاولة والبالغ عددهم (7) لاعبين يمثلون نادي السليمانية الرياضي ، والمسجلين لدى الاتحاد العراقي لتنس الطاولة. واستخدم الباحث المصادر والمراجع العلمية، وتحليل المحتوى، والاستبيان، والاختبار والقياس، والملاحظة العلمية التقنية كمصادر لجمع البيانات، وقد تضمن البحث المتغيرات البايوميكانيكية ودقة الضربة اللولبية الامامية السريعة.
        تم إجراء التجربة الرئيسية في نادي السليمانية/محافظة السليمانية، وتم تحقيق الملاحظة العلمية التقنية باستخدام آلتي تصوير رقمية ذات سرعات عالية عدد (2) لغرض تتبع الأداء الفني للضربة اللولبية الأمامية السريعة للحصول على المتغيرات البايوميكانيكية.
واستنتج الباحث : تأثر المرجحة الخلفية للذراع في الأزاحة الأفقية و الأزاحة العمودية و الأزاحة المحصلة لمرحلة أقصى إرجاع للخلف للذراع الضاربة وبين الدقة في الضربة اللولبية الأمامية السريعة، زيادة السرعة المحيطية يؤثر تأثيراً أيجابياً على الدقة في الضربة اللولبية الأمامية السريعة، وجود ارتباط معنوي موجب بين الطاقة المحصلة وبين الدقة في المرحلة التحضيرية (مرجحة الذراع الى الخلف).
ومن خلال الاستنتاجات يوصي الباحثون : توجيه اللاعبين للاهتمام بالزوايا المثالية للأداء الفني لمهارات تنس الطاولة، توجيه الاتحاد الفرعي لتنس الطاولة بضرورة توفير أجهزة التدريب الحديثة لتطوير الأداء الفني لللاعبين، دراسة المتغيرات البايوميكانيكية الأخرى التي لم تتناولها هذه الدراسة.
فعالية الاتصال للمدربين وعلاقته بالاكتفاء الذاتي لدى لاعبي الدوري الممتاز للمنطقة الوسطى بكرة القدم
Authors: عبد الخالق يحيي أفراح
Published: April 2023

هدف البحث الى التعرف على فعالية الاتصال للمدربين  والاكتفاء الذاتي لدى لاعبي الدوري الممتاز للمنطقة الوسطى بكرة القدم . وكان المجال البشري: لاعبي الدوري الممتاز للمنطقئ الوسطى . والمجال ألزماني : للمدة من 8/9/2021 – 22/12/2021. والمجال المكاني: ملاعب الاندية الرياضية المشاركة بالدوري الممتاز للموسم 2020-2021 و تم تحديد مجتمع البحث من لاعبي الاندية الرياضية المشاركة بالدوري الممتاز للموسم الكروي 2020-2021 والذي يتكون من  أشتمل مجتمع البحث  من (208) لاعب وقد تم اخذهم جميعا وبنسبة مئوية بلغت (100%)  حيث تم اختيار عينة استطلاعية لتجربة البحث (18) لاعب وبنسبة مئوية بلغت (9%) وبالطريقة العشوائية وكذلك تم اختيار عينة للثبات  وبلغت (18) لاعب وبنسبة مئوية بلغت (9%) وبنفس طريقة التجربة الاستطلاعية وقد تم اختيار عينة للبحث البالغة (172) وبنسبة مئوية بلغت (82%) لتطبيق الاستبانة واوصى الباحث بتطوير المهارات الاتصال لدى المدربين من خلال زجهم بدورات تطويرية لمفهوم الاتصال . وتطوير قابليات اللاعبين من خلال حثهم على فهم الرسائل الصوتية من قبل المدربين بالشكل الصحيح . والاستفادة من الخبرات السابقة من المدربين المحليين في تعزيز وتطوير قابليات المدربين الجدد . وضرورة الاستعانة بخبراء في مجل علم النفس الرياضي من اجل تعزيز الاكتفاء الذاتي للاعبين وتحسين قابلياتهم . والعمل على اجراء المزيد من البحوث والاتصالات في مجال لغة الجسد والتخاطب الا صوتي بين اللاعبين والمدربين .
Short Story
Authors: Cranier Louis
Published: April 2023

A short story, also known as a nouvelle, is a piece of prose fiction that can typically be read in a single sitting and focuses on a self-contained incident or series of linked incidents, with the intent of evoking a single effect or mood. The short story is one of the oldest types of literature and has existed in the form of legends, mythic tales, folk tales, fairy tales, tall tales, fables and anecdotes in various ancient communities around the world.
Pengembangan Bahan Ajar Digital Berbantuan Liveworksheets
Authors: Dewanto Dewanto
Published: April 2023

Pengembangan Bahan Ajar Digital Berbantuan Liveworksheets, adapun yang diuraikan dalam buku ini terdiri atas pengenalan terkait bahan ajar secara umum dengan ditekankan pada bahan ajar digital, pengenalan dengan platform Liveworksheets, mengeksplor fitur-fitur yang terdapat pada platform Liveworksheets secara maksimal, serta dimuatkan juga model-model penelitian pengembangan (research and development) yang dapat digunakan oleh peneliti yang ingin melakukan penelitian di bidang pendidikan, khususnya pengembangan bahan ajar digital.Penulis menyajikan isi dari konten yang terdapat dalam buku ini menggunakan bahasa yang mudah dipahami serta diikuti setiap langkah-langkahnya, terutama dalam eksplorasi pada fitur-fitur yang terdapat dalam platform Liveworksheets. Penulis berharap buku ini dapat membantu calon guru maupun guru di Indonesia dalam mengembangkan bahan ajar digital khususnya LKPD elektronik (e-worksheets) secara maksimal.
Ultra Sharp : Study of Single Image Super Resolution using Residual Dense Network
Authors: Gunasekaran Karthick Prasad
Published: April 2023

For years, Single Image Super Resolution (SISR) has been an interesting and ill-posed problem in computer vision. The traditional super-resolution (SR) imaging approaches in- volve interpolation, reconstruction, and learning-based methods. Interpolation methods are fast and uncomplicated to compute, but they are not so accurate and reliable. Reconstruction-based methods are better compared with interpolation methods, but they are time-consuming and the quality degrades as the scaling increases. Even though learning-based methods like Markov random chains are far better than all the previous ones, they are unable to match the performance of deep learning models for SISR. This study examines the Residual Dense Networks architec- ture proposed by Yhang et al. [17] and analyzes the importance of its components. By leveraging hierarchical features from original low-resolution (LR) images, this architecture achieves superior performance, with a network structure comprising four main blocks, including the residual dense block (RDB) as the core. Through investigations of each block and analyses using various loss metrics, the study evaluates the effectiveness of the architecture and compares it to other state-of-the-art models that differ in both architecture and components.
SURPAS Long Range Planning Report 2023
Authors: Byrne Eamon , MacKenzie Tim MG , goswami aranyak , Suresh Samyuktha , Ahmad M. Usman
Published: April 2023

Since early 2020, the Stanford University Postdoc Association, known as SURPAS, has been building a community-oriented vision for the future of postdocs at Stanford. This effort sought to answer the question: “What do postdocs think about the postdoc role?” During this process, we analyzed historical postdoc advocacy, held twelve focus group discussions, and collected details of contemporary advocacy efforts into a single document. More than 70 individuals engaged with the Report in the drafting stage, providing hundreds of comments to reflect the vision of the whole postdoc community at Stanford. This Report details the difficulties faced by postdocs at Stanford and provides an extensive list of recommended action items for various stakeholders, including postdoc advocacy groups, university faculty, university administrators, and national funding bodies. This Report was officially endorsed by the SURPAS Council on Thursday, March 30, 2023.
General Relativity and Cosmology: Understanding the Large-Scale Structure of the Universe
Authors: Ghosh Arnub
Published: April 2023

General relativity is a theory of gravity developed by Albert Einstein that has revolutionized our understanding of the universe on the largest scales. In this paper, we explore the key concepts of general relativity and its implications for cosmology, including the universe's accelerating expansion, the Big Bang model, dark matter and dark energy, black holes, and gravitational waves. We discuss the latest observational evidence supporting the theory of general relativity, such as the Cosmic Microwave Background radiation and the large-scale distribution of galaxies. We also examine the challenges faced by cosmology, such as the nature of dark matter and dark energy and the search for a unified theory of gravity and quantum mechanics. Furthermore, we highlight the recent detection of gravitational waves by LIGO and Virgo as a significant breakthrough in the field, providing new opportunities to test the theory of general relativity and explore the dynamics of black holes. We also discuss the potential of future observational techniques, such as the use of gravitational lensing and galaxy surveys, to further probe the nature of dark matter and dark energy. In conclusion, general relativity remains a cornerstone of modern physics and continues to inspire new research in cosmology and fundamental physics. Its applications in understanding the dynamics of black holes and gravitational waves have opened up new avenues for exploration and discovery, while the search for a more complete understanding of the universe at the largest scales remains an active and exciting area of research.
Capital Structure and Firm Performance among the listed Agro-Allied Firms in Nigeria
Authors: Yusuff Olanrewaju , Olasehinde Noah
Published: April 2023

The study empirically investigated the effect of capital structure on firm performance among agro-allied firms listed on the Nigerian Stock Exchange from 2003 to 2017. Pooled OLS, random effect and fixed effect regressions were used to analyse the data. Performance was measured by return on investment, return on assets and earnings per share while capital structure was captured by leverage and equity finance. Equity finance was found to have a significant effect on returns on investment and assets while leverage impacted earnings per share. Also, firms’ growth and age were positively related to performance while size had an inverse relationship. Therefore, firms should adopt an efficient equity-debt ratio that significantly improves performance over a specific production period.
The very model of the major modern military: world system influences on the proliferation of military weapons, 1960-1990
Authors: Eyre Dana Patrick
Published: April 2023

This dissertation investigates this rapid militarization by identifying and examining factors affecting the adoption of a variety of force structures (e.g. an independent air force) and weapons systems (e.g. supersonic aircraft, main battle tanks) by nation-states in the 1945-1990 period. Three broad arguments are taken from the literature in efforts to understand this trend. These are the superpower manipulation, national security, and internal political process arguments. Each stresses that weapons acquisition and military force structures are the result of rational calculation by actors in the pursuit of their own self-interest, but vary in their identification of central actors and actor motives. This dissertation adds and emphasizes ideas drawn from institutionaltheory to develop arguments emphasizing the impact of world-level cultural models of the nation-state on the proliferation process. These analyses demonstrate clearly that institutional arguments provide substantial insights into the process of weapons proliferation. Despite reasons for believing that the world military system may function in a unique way, these results demonstrate that it does not. Weapons proliferation, and the spread of modern forms of military organization, are shaped by the same institutionalprocesses that shape the spread of human rights, welfare systems, science policy boards, and conceptions of individualism.This research has demonstrated that that responsiveness does not end in the military realm. National militaries, just as other parts of the nation-state, occupy a constructed identity that shape their structure, practices, purposes and contents. The acquisition of a canonical modern military organization, including modern weaponry is, like the acquisition of a flag, at least in part a product of world-level cultural definitions of the modern nation-state. Like a flag, a military its weaponry are enactments of sovereign status. The results of this research demonstrate that the more a nation interacts with the larger world cultural system, the more it visibly asserts and confirms its sovereign status with the ultimate symbol of nationhood: a military.
Trust in surveys, income non-response and linkage consent - the SHARE perspective
Authors: Herold Imke , Bergmann Michael , Bethmann Arne
Published: April 2023

Item non-response, particularly regarding income questions as well as respondents’ reluctance to consent to record linkage are common issues in survey methodololgy. Both aspects have a potentially severe impact on data quality leading to less precise as well as biased estimates and thus might hamper substantive analyses. While the Survey of Health, Ageing and Retirement in Europe (SHARE) tries to alleviate these problems, e.g. through income imputations, it seems especially important to understand the underlying issues that keep respondents from reporting their income or consenting to record linkage. We thus used the opportunity to include an additional paper-and-pencil drop-off questionnaire with the German sub-study in Wave 8, focusing on issues like trust in surveys and organizations, data privacy concerns as well as attitudes towards income questions. Largely in line with previous research, we found a tendency that positive attitudes towards surveys have a positive association with providing consent and an income response, while concerns about data confidentiality with regard to surveys are negatively associated with consent and income response. Moreover, providing a substantive (exact) answer to the income question is positively correlated with consent, while there is nearly no difference between refusing a substantive income answer or providing a (rough) estimate of one’s household income. In both cases it can be assumed that respondents do not want to freely provide their income, which is negatively associated with linkage consent. This gives further insights into the underlying reasons why consent to data linkage as well as a substantive income response is given or not by people aged 50 years and older in Europe.
Herbarium of the Institute for Biological Problems of Cryolithozone (SASY): Plant type specimens
Authors: Ivanova E. I. , Sosina N. K. , Kuznetsova L. V. , Nikolin E. G. , Sofronova E. V. , Efimova A. P. , Isakova V. G. , Sleptsova A. P.
Published: April 2023

This article presents an annotated list of plant type specimens stored in the Herbarium of the IBPC SB RAS (SASY), which is one of the largest in northeast Russia. The Herbarium fund is represented by five departments (vascular plants, mosses, lichens, aphylophore fungi, and algae), where about 95000 herbarium samples are stored exluding algae tests. The Herbarium has a collection of plants from Western and Eastern Siberia, the Far East, and some central regions of Russia. The exchange fund contains more than 3000 species of plants. Typical samples stored in Herbaria are of a particular value. In total, 14 species and 2 subspecies of liverworts, mosses, and vascular plants from 11 families were isolated from the main collection of the SASY Herbarium, which are represented by 14 types, 16 isotypes, 14 paratypes, and 5 epitypes (Frullania ignatovii Sofronova, Mamontov et Potemkin, Barbula jacutica Ignatova, Grimmia jacutica Ignatova, Bednarek-Ochyra, Afonina, J. Muñoz, Aconogonon amgense (V. Mich. et V. Perf.) Tzvel., Androsace gorodkovii Ovcz. et Karav., Anoplocaryum elenae Volot., Artemisia karavajevii Leonova, Astragalus zhiganicus L. Kuzn., and Castilleja galaсtionovae E.G. Nikolin, Castilleja rubra (Drob.) Rebr. var. multicaulis E.G. Nikolin, Castilleja tenella Rebr., Oxytropis scheludjakovae Karav. et Jurtzev, Rosa acicularis Lindl. subsp. melanocarpa L. Kuzn., Sorbocotoneaster pozdnjakovii Pojark. var. cotoneaster L. Kuzn. et Volot., S. pozdnjakovii Pojark. var. sorbus L. Kuzn. et Volot., Salix x zhataica Efimova, Shurduk & Ahti). Plants, the types of which are stored in SASY, represent the indigenous flora of Yakutia and are found quite rarely in this territory; eight of these species are listed in the Red Book of the Republic of Sakha (Yakutia), and 11 species are endemic. For each sample, a quote of the original label is indicated, and a brief ecology, distribution, and rarity category is given. The originality of the publication of each standard sample is indicated by the images of digitized herbarium sheets and their labels.