bluuebunny/crossref_metadata_2025 huggingface dataset:
Laser Vibrometry: The Effect of Speckle Size on Doppler Signal Phase and Amplitude Modulation
Authors: Denman Matthew , Halliwell Neil A. , Rothberg Steven J.
Published: March 2021

When coherent laser light is incident on a surface that is rough on the scale of the optical wavelength a speckle pattern is formed in the light which is backscattered. The performance of Laser Doppler Vibrometers is significantly influenced by changes which occur in the speckle pattern on the instrument’s photodetector. This paper investigates experimentally how the ratio of photodetector size to speckle size affects both the phase and amplitude of the Doppler signal component of the photodetector output.

This speckle induced signal modulation contributes noise in the instrument’s output referred to as speckle noise. Minimisation of speckle noise is essential to lower the Laser Vibrometer noise floor and ensure reliable operation. Experimental data are presented in this paper to explore the combined effects of speckle size, photodetector size and speckle transition speed. Speckle noise is found to be minimised when a compromise in detector position is achieved between the competing effects of speckle size and speckle transition speed.
WHO's treatment megatrial is at a standstill
Authors: Kupferschmidt Kai
Published: March 2021

Unique international trial has struggled to build on its first batch of results.
A Spontaneous
rapZ
Mutant Impairs Infectivity of Lytic Bacteriophage vB_EcoM_JS09 against Enterotoxigenic Escherichia coli
Authors: Zhou Yan , Bao Hongduo , Zhang Hui , Pang Maoda , Zhu Shujiao , Wang Ran
Published: March 2021

The development of phage-resistant bacteria is a challenging problem for phage therapy. However, our knowledge of phage resistance mechanisms is still limited.
Protein Interactomes of Streptococcus mutans YidC1 and YidC2 Membrane Protein Insertases Suggest SRP Pathway-Independent- and -Dependent Functions, Respectively
Authors: Lara Vasquez Patricia , Mishra Surabhi , Kuppuswamy Senthil K. , Crowley Paula J. , Brady L. Jeannine
Published: March 2021

Streptococcus mutans
is a prevalent oral pathogen and major causative agent of tooth decay. Many proteins that enable this bacterium to thrive in its environmental niche and cause disease are embedded in its cytoplasmic membrane.
Impact of acute care surgery model in aspects of patients with upper gastrointestinal hemorrhage: result from a single tertiary care center in Thailand
Authors: Laohathai Sirasit , Jaroensuk Jittima , Laohathai Sira , Laohavinij Wasin
Published: March 2021

Background

Even though an acute care surgery (ACS) model has been implemented worldwide, there are still relatively few studies on its efficacy in developing countries, which often have limited capacity and resources. To evaluate ACS efficacy in a developin country, we compared mortality rates and intervention timeliness at a tertiary care center in Thailand among patients with an upper gastrointestinal hemorrhage (UGIH).

Methods

This retrospective study compared two 24-month periods between pre-ACS and post-ACS implementations from July 1, 2014, to June 30, 2018. Medical records from consecutive patients with UGIH in the surgical department of Chonburi Hospital, Thailand, were reviewed. The primary outcome was UGIH mortality rate differences between pre-ACS and post-ACS implementations. Differences in complications rate, length of hospital stay (LOS), time to esophagogastroduodenoscopy (EGD) and proportion of patients undergoing esophagogastroduodenoscopy (%EGD) in the same admission were also analyzed using unpaired t-test and Fisher’s exact test. Baseline characteristic differences between the pre-ACS and post-ACS periods were controlled for in multiple linear and logistic regression models.

Results

A total of 421 patients were included (162 pre-ACS and 259 post-ACS). Results showed a mortality rate of 24% in post-ACS compared with 41% in pre-ACS period (p<0.001). Overall complications (38% vs 27%), LOS (6.4 days vs 5.6 days) and time to EGD (44 hours vs 25 hours) were also significantly reduced, whereas %EGD increased (70% vs 89%). After adjusting for covariates, patients in the post-ACS period had lower risk of death (OR 0.54, p=0.040), lower risk of developing respiratory complications (OR 0.52, p=0.036), higher chance of receiving EGD in the same admission (OR 2.94, p<0.001) and shortened time to EGD for 19 hours (p<0.001).

Discussion

Our results provide evidence that ACS can be implemented to improve patient outcomes at medical centers in developing countries with limited resources.

Level of evidence

Therapeutic/care management, level IV.
3D Steerable Biopsy Needle with a Motorized Manipulation System and Ultrasound Tracking to Navigate inside Tissue
Authors: Padasdao Blayton , Varnamkhasti Zahra Khashei , Konh Bardia
Published: March 2021

Needle insertion techniques have been used in several minimally invasive procedures for diagnostic and therapeutic purposes. For example, in tissue biopsy, a small sample of suspicious tissue is extracted using percutaneous needles for further analysis. A clinically significant biopsy sample is a definitive factor in cancer diagnosis; therefore, precise placement of the needle tip at target location is necessary. However, it is often challenging to guide and track the needle in a desired path to reach the target precisely, while avoiding sensitive organs or large arteries. Needle steering has been an active field of research in the past decade. Researchers have introduced passive and active needles to improve navigation and targeting inside the tissue. This work introduces a novel active steerable biopsy needle capable of bending inside the tissue in multiple directions. The needle is equipped with a biopsy mechanism to extract suspicious tissue. A motorized manipulation system is developed and programmed to pull the cable tendons and control the needle deflection inside tissue. To show the feasibility of the design concept, the active needle manipulation in air and in a tissue-mimicking phantom is evaluated. An average angular deflection of about 12.40∘ and 11.34∘ in three principal directions is realized in air and phantom tissue, respectively, which is expected to assist in breast cancer biopsy. A robot-assisted ultrasound tracking method is also proposed to track the active needle tip inside the phantom tissue in real time. It is shown that using this method, the needle tip can be tracked in real time with an average and maximum tracking error of [Formula: see text][Formula: see text]mm and [Formula: see text][Formula: see text]mm, respectively.
Artificial Intelligence Method for Shear Wave Travel Time Prediction considering Reservoir Geological Continuity
Authors: Liu Shanshan , Zhao Yipeng , Wang Zhiming
Published: March 2021

The existing artificial intelligence model uses single-point logging data as the eigenvalue to predict shear wave travel times (DTS), which does not consider the longitudinal continuity of logging data along the reservoir and lacks the multiwell data processing method. Low prediction accuracy of shear wave travel time affects the accuracy of elastic parameters and results in inaccurate sand production prediction. This paper establishes the shear wave prediction model based on the standardization, normalization, and depth correction of conventional logging data with five artificial intelligence methods (linear regression, random forest, support vector regression, XGBoost, and ANN). The adjacent data points in depth are used as machine learning eigenvalues to improve the practicability of interwell and the accuracy of single-well prediction. The results show that the model built with XGBoost using five points outperforms other models in predicting. The R2 of 0.994 and 0.964 are obtained for the training set and testing set, respectively. Every model considering reservoir vertical geological continuity predicts test set DTS with higher accuracy than single-point prediction. The developed model provides a tool to determine geomechanical parameters and give a preliminary suggestion on the possibility of sand production where shear wave travel times are not available. The implementation of the model provides an economic and reliable alternative for the oil and gas industry.
Antihypertensive Effects of the Vitex cienkowskii (Verbenaceae) Stem-Bark Extract on L-NAME-Induced Hypertensive Rats
Authors: Metchi Donfack Mireille Flaure , Atsamo Albert Donatien , Temdié Guemmogne Roméo Joël , Ngouateu Kenfack Omer Bébé , Dongmo Alain Bertrand , Dimo Théophile
Published: March 2021

Vitex cienkowskii stem-bark is used in Cameroonian traditional medicine to treat cardiovascular diseases including hypertension. In previous studies, the methanol/methylene chloride stem-bark extract of Vitex cienkowskii (MMVC) showed a preventive activity in L-NAME-induced hypertension and improved blood pressure of spontaneously hypertensive rats. The present study investigated the curative effects in L-NAME-induced hypertensive rats (LNHR). Hypertension was induced in rats by oral administration of L-NAME (40 mg/kg/day) for 28 days. The animals were divided into 2 groups: one group of 5 rats receiving distilled water (10 ml/kg) and another 20 rats receiving L-NAME. At the end of 4 weeks of administration of L-NAME, the animals were divided into 4 groups of 5 rats each: one group of hypertensive rats receiving distilled water, another one receiving captopril (25 mg/kg), and two groups of hypertensive rats receiving MMVC at doses of 200 and 400 mg/kg, respectively. Body weight, food, and water intake were measured weekly. At the end of the treatment, blood pressure and heart rate were recorded by invasive method. Whole heart, left ventricle, kidneys, and liver were weighed. The effects of plant extract on lipid profile and oxidative stress markers, as well as markers of hepatic and renal functions were assessed spectrophotometrically according to well described protocols. Results show that L-NAME significantly increases the mean arterial blood pressure (MABP), atherogenic index, lipid profile, and creatinine and transaminase activities of normotensive rats. MMVC significantly reduced the blood pressure in LNHR. Body weight, food and water intake, left ventricular hypertrophy, antioxidant level, renal and hepatic markers, and lipid profile were improved by the treatment with MMVC. The curative effect of MMVC on L-NAME-induced hypertension is probably related to its antihypertensive, hypolipidemic, and antioxidant properties. These results confirmed the use of Vitex cienkowskii for the treatment of hypertension in traditional medicine.
Simplified cascade multiphase DC-DC boost power converters for high voltage-gain and low-ripple applications
Authors: Dahono Pekik Argo
Published: March 2021

This paper proposes two new simplified cascade multiphase DC-DC boost power converters with high voltage-gain and low ripple. All simplifications reduce the number of active switching devices from 2N into N, where N is the phase number. The first simplification reduces the number of inductors from 2N into N+1 and increases the number of diodes from 2N into (2N+1). The second simplification reduces the number of inductors from 2N into N+1 and increases the number of diodes from 2N into (3N+1). The second simplification needs inductors with smaller current rating than the first simplification. The expressions of output voltage as a function of load current are derived by taking into account the voltage drops across the inductors and switching power devices. Simulated and experimental results are included to show the basic performance of the proposed cascade multiphase DC-DC boost power converters.
Experimentally evaluating electrical outputs of a PV-T system in Jordan
Authors: Etier Issa , Nijmeh Salem , Shdiefat Mohammed , Al-Obaidy Omar
Published: March 2021

This experimental work is looking at the properties of photovoltaic/thermal (PV-T) system, which had designed to increase the output power of the PV panel for the climate of Zarqa, Jordan. Operating temperature of the PV module has a significant impact on the performance of the PV module. However, most of the radiation energy absorbed by the PV panel is converted into heat, which is normally lost and provides no value. In order to decrease the operating temperature of the PV panel, a water cooling system with a control system had designed. Experimentally, when the PV module was operating under active water-cooling condition using the backside cooling technique, the temperature dropped significantly, which led to an increase in the electrical efficiency of solar cells by 6.86%.
The experimental identification method of the dynamic efficiency for frequency regulation algorithms of AEDs
Authors: Kodkin Vladimir L. , Anikin Aleksandr S.
Published: March 2021

The article proposes and substantiates a method for studying the dynamics of an asynchronous electric drives with frequency control from the input side of the signal for setting the speed of rotation of the electric motor. In this method, a constant speed reference signal is added to a harmonic variable frequency signal. The set of amplitude changes and phase shifts of velocity oscillations are the initial data for identifying the dynamics of the studied control method. The logic of this method is determined by the previously obtained nonlinear transfer function of the link that forms the mechanical moment in the asynchronous electric drive with frequency control. Experiments have shown the dynamic benefits of the drive with positive stator current feedback.
Heidegger on Zhuangzi and Uselessness: Illustrating Preconditions of Comparative Philosophy
Authors: Van Brakel Jaap
Published: March 2021

In this article, I look at those passages in the Zhuangzi usually associated with “uselessness.” I discuss in what way these passages may have been suggestive to Martin Heidegger to explain his ideas of the necessity of the other thinking and of the “waiting people” being entirely unusable to others. Then I make some brief comments concerning basic conditions of interpretation, using examples taken from the Zhuangzi passages discussed. These conditions include family resemblance across the board, a principle of agreement, and the issue of “planetarization” (Heidegger’s term).
The effects of ductal size on the severity of pulmonary hypertension in children with patent ductus arteriosus (PDA): a multi-center study
Authors: Chinawa Josephat M. , Chukwu Bartholomew F. , Chinawa Awoere T. , Duru Chika O.
Published: March 2021

Introduction

Patent ductus arteriosus (PDA) is a common acyanotic heart disease that presents with variable symptoms.

Objectives

This study is therefore aimed at determining the relationship between gender, age, and size of PDA and pulmonary hypertension. This study also seeks to determine the prevalence of elevated pulmonary artery systolic pressure in children with PDA.

Patients and methods

A descriptive study of children with patent ductus arteriosus was carried out from 2016 to 2020 in three institutions. The data were analysed with the IBM SPSS statistics for windows, version 20 (IBM Corp, Chicago)

Result

The mean ductal size was 3.78 (2.39) mm, with a minimum of 1.0 mm and a maximum size of 10.0 mm. The mean ductal size for males, 4.02 (2.53) mm was comparable with that of the females, 3.61 (2.28) mm (Student T-test = 0.8, 0.4). The mean pulmonary artery systolic pressure (PASP) of the patients was 43.36 (24.46) mmHg. Also the mean PASP was comparable among the males and the females, 48.37 (26.69) mmHg versus 39.63 (22.16) mmHg (Student T-test = 1.81, p = 0.07). There was no correlation between age and PASP (correlation coefficient = 0.009, p = 0.92). Sixty point two percent (60.2%) (62/103) of children with PDA had pulmonary hypertension. The proportion of males with pulmonary hypertension, 48.39% (30/62) was comparable with that of the females, 51.61% (32/62) (Chi2 = 2.05, p = 0.15) and females are 1.8 times more likely to have pulmonary hypertension as males (odds ratio 1.81, 95% CI 0.8–4.1). There was a positive correlation between ductal size and PASP (Pearson correlation coefficient = 0.26, p value = 0.007). Those with moderate and large sized duct tend to have moderate and severe pulmonary hypertension respectively and this is statistically significant. Chi2 = 17.85, p = 0.007

Conclusion

The prevalence of pulmonary hypertension in children with PDA is 60.2%. Moderate and large size duct presents with moderate and severe pulmonary hypertension respectively. Females are 1.8 times more likely to have pulmonary hypertension than the males.
Family law
Authors: Demichev Kirill , Gracheva Oksana , Ilyuhina Vera , Karpychev Mihail , Mihin Aleksandr , Pchelkin Aleksandr , Huzhin Al'fir
Published: March 2021

The textbook deals with the issues of the family law course, taking into account the current family, civil, civil procedure legislation and judicial practice. Prepared in accordance with the requirements of the Federal State Educational Standard of Higher Education of the latest generation in the areas of training 40.03.01 and 40.04.01 "Jurisprudence", in the specialties 40.05.01 "Legal support of national security" and 40.05.02 "Law enforcement". For students, postgraduates and teachers of law educational institutions of higher education and faculties, as well as a wide range of readers interested in family law.
Understanding personal asthma action plans
Authors: Henry Heather
Published: March 2021

Personal asthma action plans are an essential tool to keep people with asthma as well as possible. Heather Henry explains the role of the practice nurse in developing them

Personal asthma action plans (PAAPs) are written plans that help people with asthma to self-care and keep themselves as well as possible. PAAPs are usually developed in partnership with the patient or carer in primary care. PAAPs aim to ensure that people with asthma know how to manage their asthma and when to seek help if their condition deteriorates. To manage their asthma adequately at home, patients will need regular education about what asthma is, an understanding of their triggers, how their medications work and managing their devices. The practice nurse can play a key role in developing the PAAP, monitoring asthma control, and subsequently modifying the PAAP if necessary to maintain control of the condition.
Enigma of the Dark: Reflections while Researching Journalism and the Claremont Serial Killings
Authors: Romano Mary-Anne
Published: March 2021

After almost 25 years of mass media coverage on the Claremont Serial Killings, Perth audiences were informed in December 2020 that Bradley Robert Edwards would serve two life sentences for murdering two of the young women. This article draws on interviews with journalists to discuss media practices in the case that shocked Perth while shaping audience understandings of women as victims. The article describes how the term ‘serial killer’ came into use to bolster the importance of Western Australian news; how the status and resources of victim’s family influenced media coverage and, consequently, the police investigation; and, how the position of a journalist as an unbiased observer became untenable in the case.
Seeking Asylum—Holding Patterns: The 2020 Ballina Region for Refugees Poetry Prize
Authors: Boyd Bill , Doolan Emma , Henderson Ruth
Published: March 2021

Poetry provides valuable and insightful ways to explore and record social and political experiences and engagements. The plight of refugees and people seeking asylum in Australia is well known. Community groups such as the Ballina Region for Refugees provide support to refugees and asylum seekers both in Australia and offshore. To help raise awareness and validate the experience of refugees and asylum seekers, the Ballina Region for Refugees runs an annual Poetry Prize. The 2020 Ballina Region for Refugees Poetry Prize theme was Seeking Asylum—Holding Patterns. This article presents the winning and highly commended poems, along with poems by refugee and asylum seeker poets. Poems from both insider witnesses – refugees and asylum seekers – and outsider witnesses – poets who seek to express an empathy with the plight of refugees and asylum seekers – have contributed to this collection. From haunting statements of human dissolution that should strike fear into anyone’s heart, through glimpses of hope, the poems explore the trails of asylum seeking and the dysfunctionality of the aftermath.
Small RNA sequencing to differentiate lung squamous cell carcinomas from metastatic lung tumors from head and neck cancers
Authors: Shimada Yoshihisa , Matsubayashi Jun , Saito Akira , Ohira Tatsuo , Kuroda Masahiko , Ikeda Norihiko
Published: March 2021

Distinguishing lung squamous cell carcinoma (LSQCC) from a solitary metastatic lung tumor (MSQCC) from head and neck squamous cell carcinoma (HNSQCC) presents a difficult diagnostic challenge even after detailed pathological assessment. Treatment options and estimated survival outcomes after pulmonary resection differ between patients with LSQCC and MSQCC. This study aimed to investigate whether microRNA (miRNA) profiling by RNA sequencing of HNSQCC, MSQCC, and LSQCC was useful for differential diagnosis of MSQCC and LSQCC. RNA sequencing was performed to identify bioinformatically significant miRNAs from a formalin-fixed paraffin-embedded (FFPE) block from a derivation set. MiRNA levels were confirmed by validation sets using FFPE samples and serum extracellular vesicles from patients. Step-wise discriminant analysis and canonical discriminant analysis identified 13 miRNAs by which the different expression patterns of LSQCC, MSQCC, and HNSQCC groups were demonstrated. Six miRNAs (miR-10a/28/141/320b/3120) were assessed in validation sets, and 4 miRNAs (miR-10a/28/141/3120) were significantly upregulated in LSQCCs compared with MSQCCs and HNSQCCs. Serum extracellular vesicles from LSQCC patients demonstrated significantly elevated miR-10a (p = .042), miR-28 (p = .041), and miR-3120 (p = .047) levels compared with those from MSQCC patients. RNA sequencing is useful for differential diagnosis of LSQCC and MSQCC, and the expression level of miR-10a, miR-28, and miR-3120 in serum extracellular vesicles are promising noninvasive tools for this purpose.
Awareness of Personal Protective Equipment Among Laboratory Workers in Tertiary Health Centre, Ibadan
Authors: Amoo Abimbola , Ezoke Christiana
Published: March 2021

Introduction
Health care personnel are exposed to a variety of material occupational health hazards while handling biological material and contaminated equipment. The use of appropriate and good qualitypersonal protective equipment in work places cannot be over emphasized. Several years ago, this need was highlighted to several physicians like Sir Thomas Morrison Legye. He identified the role of the employer of labour and those of the employee in reducing workplace hazards and consequently achieving a healthy workplace environment.

Objectives
This study was to determine level of awareness and utilization of Personal Protective Equipment among Medical Laboratory workers.

Methods
A questionnaire was structured with two sections and a total of 92 were administered. A pilot study was also carried out before the administration of the questionnaire. The data collected was analyzed on Microsoft excel spreadsheet in duplicate. It was then exported into EPI info version 3.4.1. Data was presented using frequency tables and chi square.

Results
About 77.3%, 72.9%, and 72.7% were aware of the use of goggle, gloves, and importance of hand washing in preventing exposure to Healthcare associated infections while working on patients’ samples. However, under the socio- demographic characteristics of the respondents and awareness level at P-value < 0.5 the results were 0.02. 0.5, 0.85, 0.92 for education, gender, years in service and age respectively. Hence, there is no significant relationship between respondents’ gender, age and year in service, and level of awareness.

Conclusion
The hospital management should ensure regular provision and supply of Personal Protective Equipment (PPE) to ensure continual usage. Also, regular training and re-training should be conducted to keep the laboratory workers at briefs with latest innovative and benefits of PPE developments to this end.
Evaluación de un programa psicoterapéutico para cuidadores de pacientes con TCA: Estudio piloto
Authors: Pla Vanessa , Moreno Eugenia , Fuentes-Durá Inmaculada , Dasí Carmen
Published: March 2021

El objetivo de esta investigación es llevar a cabo un estudio piloto para evaluar un programa psicoterapéutico para cuidadores de pacientes diagnosticados de trastorno de la conducta alimentaria (TCA). El programa se ha aplicado a 13 cuidadores, todos ellos familiares de los pacientes, y está compuesto por 12 sesiones agrupadas en tres bloques. El estudio se desarrolla a lo largo de un año entero, ya que la evaluación de los cuidadores y pacientes se realiza antes de la intervención, al finalizar ésta y en una evaluación de seguimiento a los 6 meses. Los resultados de los familiares han mostrado una mejoría significativa en la experiencia como cuidador, una menor acomodación y mayor competencia frente al TCA, aumento de la satisfacción familiar, así como una disminución de los niveles de ansiedad y depresión. En los pacientes también se observó una disminución significativa de la sintomatología del trastorno.
La Psicología Mexicana en el contexto de Iberoamérica
Authors: Valdés Caraveo Rosario , Tamargo Rivero Alejandra
Published: March 2021

Aunque compartimos el mismo idioma y problemas sociales como el desarrollo de la psicología en los países de América Latina, ha sido un tanto irregular, en algunos países los sindicatos de la psicología en México están más desarrollados. Como te darás cuenta en este artículo, tenemos un mayor desarrollo en la acreditación de programas de psicología. En México el desarrollo de nuestra profesión tiene diferentes tendencias modalidades de formación y también la masa de nuestra disciplina desde los años setenta ha hecho de la calidad de los procesos de todos los programas de psicología están presentes en porcentajes bajos, y la organización de comercio con respecto a la certificación de los psicólogos ha sido lento. Este trabajo es de carácter recopilatorio y cita varios autores que se han ocupado de los análisis de la psicología en México.
Evaluation of fluoride releasing and recharging of orthodontic adhesive resins: An in vitro study.
Authors: Bakhtyar Sava , Hassan Bayan
Published: March 2021

Background and objective: Development of white spot lesions to be a well-recognized and common side effect of orthodontic fixed appliance, in spite of vast improvement in preventive dental techniques and procedures. The aim of this study is to determine and compare amount of fluoride releasing and recharging of orthodontic adhesive resins. Materials and methods: 12 specimens for fluoride releasing and recharging were used for each tested materials, materials tested for fluoride releasing were Transbond plus color change and Resilience (fluoridated ortho-adhesive resin). Fluoride releasing was estimated daily for 14 days, then weekly up to 28 days, then at day 42, 70 days. For fluoride recharging in addition to above materials Transbond XT (non- fluoridated ortho-adhesive resin) were used as a control group. The 12 specimens of each material were divided into two equal subgroups to simulate two different methods of fluoride application, namely, brushing with fluoride-containing toothpaste and after the topical application of fluoride gel. Fluoride releasing was measured at days 1,2,3,7 for gel application while for brushing group releasing of fluoride was measured at 7 days. Results: Mann Whitney test, Kruskal Wallis test and Wilcoxon signed rank test were used for statistical analysis. During tested period all materials showed statically different capacity to release and uptake fluoride. Transbond plus color change was highest ability for fluoride releasing and recharging when compared to others materials. Conclusion: Transbond plus color change and Resilience, showed fluoride release in distal de-ionized water. For fluoride recharging Transbond plus color change had more ability for re-charging than two other materials. Keywords: Fluoride release, fluoride recharge, ortho-adhesive resin.
Lithuanian Tatars Manuscripts Written in Arabic Script from a Private Collection: New Discoveries
Authors: Miškinienė Galina
Published: March 2021

At the turn of the 20th and the 21st centuries, more and more attention is being paid to the written heritage of Lithuanian Tatars. From 1997 to 2020 seven catalogues of Lithuanian Tatars manuscripts were published. These catalogues describe the Lithuanian Tatars manuscripts kept in state institutions, museums, archives, as well as in private collections of various countries. The largest collections of manuscripts are stored in Belarus and Lithuania. The emergence of such catalogues is an excellent basis for further comparative studies.In 2020 the author of this article managed to get acquainted with a new collection of manuscripts stored in a private collection. Five manuscripts were reviewed and analyzed during this research. All of them perfectly represent the main genres of Lithuanian Tatars manuscripts heritage, such as kitabs, semi-kitabs, hamails, and tefsirs. The manuscripts are dated to the end of the 19th – the beginning of the 20th centuries. A detailed description of these manuscripts is presented in this article.
On extremal problems of approximation theory for classes of functions of two discrete variables in $l^2_{q,p}$
Authors: Vakarchuk S.B. , Vakarchuk M.B.
Published: March 2021

For classes of $2\pi$-periodic functions of two discrete variables, defined on grid set $\sigma_{q,p}$, we found exact values of Kolmogorov and linear quasiwidths of classes $W^{r,p}(l^2_{q,p})$ in $l^2_{q,p}$ space.
On removal of isolates singularities of open discrete mappings
Authors: Sevostianov Ye.A.
Published: March 2021

We study mappings with finite distortion in $\mathbb{R}^n$, $n \geqslant 2$. For the classes of mappings with branching that satisfy modal inequalities we obtain the set of theorems on removal of isolated singularities.
One-sided approximation of some classes of singular integrals with regard to point position on the interval
Authors: Pasko A.M.
Published: March 2021

We obtain asymptotically exact estimates of approximation of functions from some classes of singular integrals by algebraic polynomials with regard to point position on the interval.
Exact inequalities of Kolmogorov type for Hadamard fractional derivatives of functions defined on half-line
Authors: Babenko V.F. , Parfinovich N.V.
Published: March 2021

New exact inequalities for Hadamard fractional derivatives of functions, defined on the half-line, are obtained.
Asymptotics of $L_p$-error for adaptive approximation of $n$-variable functions by harmonic splines
Authors: Leskevich T.Yu.
Published: March 2021

For a twice continuously differentiable function, defined on $n$-dimensional unit cube, we obtain sharp asymptotics of $L_p$-error for approximation by harmonic splines, and construct the asymptotically optimal sequence of partitions.
Absolute convergence of Fourier integrals and Lipschitz classes
Authors: Peleshenko B.I.
Published: March 2021

The necessary and sufficient conditions, in terms of Fourier transforms $\hat{f}$ of functions $f \in L^1(\mathbb{R})$, are obtained for $f$ to belong to the Lipschitz classes $H^{\omega}(\mathbb{R})$ and $h^{\omega}(\mathbb{R})$.
Conditions of unicity of the best nonsymmetric $L_1$-approximant for vector-valued functions by one-dimensional subspace
Authors: Tkachenko M.Ye. , Traktynska V.M.
Published: March 2021

The conditions of the unicity of the best nonsymmetric $L_1$-approximant for the continuous vector-valued functions on the metric compact by one-dimensional subspace are obtained.
Political Complexities of Ethnochoreological Research: The Facets of Scholarly Work on Dance in the Countries of Former Yugoslavia
Authors: Rakočević Selena
Published: March 2021

As independent scholarly discipline grounded in folkloristics, ethnochoreology was predominantly founded within the state institutions of the socialist regime of former Yugoslavia after World War II and was consequently molded theoretically and methodologically in accordance with the prevailing ideology of the ruling socialist political system. In post-socialist regimes established in former Yugoslavian republics after the 1990s, which led to emerging market economies and caused huge modifications in the official social and educational policies of each country, ethnochoreology continued to be linked with state institutions. At the same time, however, it has been subject to extensive remodeling which included changes within the discipline itself along with its repositioning in the academic and educational system.

This article examines political facets of ethnochoreological research in former Yugoslavian republics, comparing the experiences of many individual dance scholars. Based on interviews with colleagues from Serbia, Croatia, Bosnia and Herzegovina, Macedonia and Montenegro, the study will explore the general position of ethnochoreologists as well as their attitudes toward the relationships between dance research and the concrete political situations in each of their countries. Questions discussed encompass standpoints about how the political realities we are living in influence the remodeling of ethnochoreology in epistemological and methodological terms, but also its position in academic, educational and research contexts.
Folk Artisans and Dissidence in the Nomadic Generation of the 1970s and 1980s
Authors: Cseh Fruzsina
Published: March 2021

The dance house and folk artisans movements have developed into such a youth subculture in the cultural scope of the socialist Hungary, which the Kádárian cultural policy could support only partially, it was rather placed at the borderland between the ‘tolerated’ and ‘banned’ categories. The so-called Nomadic Generation was attached to the developing domestic dissident opposition just as well as to the cross border Hungarian intelligentsia through many threads, which seemed to be undesirable for those in power. This study outlines a general picture on the characteristics of the folklorist-movement of the 1970s and 1980s, thought to be dissident in nature, then it will show through examples of different life courses and case studies how the search for new paths materialized in folk handicrafts, and what impact this era exerted on the folk artisanship in the period after the political transition.
A Comprehensive Map of mRNAs and Their Isoforms across All 14 Renal Tubule Segments of Mouse
Authors: Chen Lihe , Chou Chun-Lin , Knepper Mark A.
Published: March 2021

Significance Statement

There are at least 14 different renal tubule segments, each with characteristic cell types with distinct functions. Although the advent of RNA sequencing (RNA-seq) has greatly improved our understanding of gene expression in these renal epithelial cell types, detailed mapping of transcripts has been limited by methods that tend to be biased toward transcript ends. Coupling full-length RNA-seq analysis with renal tubule microdissection characterized gene expression along the mouse renal tubule, including mapping of transcript abundance and alternative exon usage. The data provide a comprehensive view of gene expression along the nephron and collecting duct, made available to scientists via a user-friendly web resource.

Background

The repertoire of protein expression along the renal tubule depends both on regulation of transcription and regulation of alternative splicing that can generate multiple proteins from a single gene.

Methods

A full-length, small-sample RNA-seq protocol profiled transcriptomes for all 14 renal tubule segments microdissected from mouse kidneys.

Results

This study identified >34,000 transcripts, including 3709 that were expressed in a segment-specific manner. All data are provided as an online resource (https://esbl.nhlbi.nih.gov/MRECA/Nephron/). Many of the genes expressed in unique patterns along the renal tubule were solute carriers, transcription factors, or G protein–coupled receptors that account for segment-specific function. Mapping the distribution of transcripts associated with Wnk-SPAK-PKA signaling, renin-angiotensin-aldosterone signaling, and cystic diseases of the kidney illustrated the applications of the online resource. The method allowed full-length mapping of RNA-seq reads, which facilitated comprehensive, unbiased characterization of alternative exon usage along the renal tubule, including known isoforms of Cldn10, Kcnj1 (ROMK), Slc12a1 (NKCC2), Wnk1, Stk39 (SPAK), and Slc14a2 (UT-A urea transporter). It also identified many novel isoforms with segment-specific distribution. These included variants associated with altered protein structure (Slc9a8, Khk, Tsc22d1, and Scoc), and variants that may affect untranslated, regulatory regions of transcripts (Pth1r, Pkar1a, and Dab2).

Conclusions

Full-length, unbiased sequencing of transcripts identified gene-expression patterns along the mouse renal tubule. The data, provided as an online resource, include both quantitative and qualitative differences in transcripts. Identification of alternative splicing along the renal tubule may prove critical to understanding renal physiology and pathophysiology.
Green Skills Understanding of Agricultural Vocational School Teachers around West Java Indonesia
Authors: Handayani Mustika Nuramalia , Ali Mohammad , Wahyudin Dinn , Mukhidin Mukhidin
Published: March 2021

This study investigated understanding of agricultural vocational school teachers about green skills and its entity in the curriculum. Data were gathered through survey of teachers from fifteen agricultural vocational high school of agricultural food processing technology study program in West Java Province, Indonesia regarding their understanding about green skills. The results showed that the teachers had less knowledge of green skills, limited to environmental issues. However, they agreed that students needed to be equipped with green skills. The entity of green skills has not been stated explicitly in the curriculum of agricultural vocational school. However, the teachers argued that green skills could be embedded in the subjects of the existing curriculum. The findings of this preliminary study indicated the need to increase teacher understanding of green skills and curriculum development in agricultural vocational schools to meet industrial needs in order to support sustainable development in accordance with the UNESCO strategy for vocational education.
COVID 19: Impetus for “Community Spirits” among Filipinos
Authors: Razon Brando Cabigas
Published: March 2021

Virus is a borderline between living and non-living things, not capable of reproduction but only do this process utilizing the machineries of a living cell. For most ordinary people in the Philippines, the corona virus that caused Corona Virus Disease in December 2019 (COVID 19) was not of big importance. The Philippine government was just observing the usual measure such as installing thermal screening in the airports to detect arriving passengers with flu. The virus continued to spread to the whole world. The continuous spread of the virus is the reason why mass media in print, in television, and other forms were used to educate people on how to prevent the spread of the virus. The Philippines positive cases were increasing almost exponentially. The Philippines government was getting more serious on the corona virus problem. President Rodrigo Duterte announced in the evening of March 12, 2020 of the month-long lock down of the whole Metro Manila from March 15 to April 14, 2020 as the country looks forward to contain the COVID 19. Land, domestic air and domestic sea to and from Metro Manila were suspended within the period. Social and religious activities that involved mass gathering were banned. Conferences, seminars and like activities were postponed and people were advised to stay at home. The lock down has brought about both negative and positive things to the government and to the people which can be observed commonly in every place. The negative things could fall into economic, social and psychological aspects. If corona virus brings negative and undesirable things in the community and in the Philippines, there are also positive things that sprouted. It is true indeed that a misfortune or a disaster to a place or persons can be an opportunity to others. Lots of things which are favorable and beneficial to many people and to the nature during the lock down which include economic, social and ecological aspects. The current situation brought by the corona virus that resulted to lock down implemented by the government of the Philippines gives an opportunity to learn the value of compassion and empathy in times of crisis. COVID 19 is bad, but people can also see the good effect of it. In the Philippines, people always boost the morale of our fellow Filipinos to unite in this battle to overcome this crisis and “together, we heal as one”.
Level of Use and Satisfaction of E-Commerce Customers in Covid-19 Pandemic Period: An Information System Success Model (ISSM) Approach
Authors: Dirgantari Puspo Dewi , Hidayat Yusuf Murtadlo , Mahphoth Mohd Halim , Nugraheni Rury
Published: March 2021

Pandemic outbreaks of COVID-19 have made customers take drastic steps to help world governments to prevent further spread, one of which is by social distancing. This policy made buying and selling online a convenient option to fulfill the needs for goods and/or services. The purpose of this study was to determine the level of use and satisfaction of e-commerce customers in the COVID-19 pandemic period with the information system success model (ISSM) approach that was formed through system quality, information quality, and service quality. The research method used a quantitative approach by distributing questionnaires to respondents of 206 e-commerce costumers. Data analysis used Structural Equation Modeling (SEM) where the results confirm that system quality, information quality, service quality, affected the level of use and user satisfaction of e-commerce customers. E-commerce companies are recommended to maintain, even improve system quality and information quality because information that is less interesting, less relevant, and difficult to understand results in low information quality, which in turn, can reduce the level of use and customer satisfaction.
MathConnex mathematical package for calculating the equivalent thermal conductivity of a strip coil
Authors: Kryuchkov O. B. , Krokhalev A. V. , Malenko P. I. , Saranin L. G.
Published: March 2021

When heating complex metal loads (layered, fibrous, granular), the gas gaps in them increase the temperature difference across the charge section and lead to an increase in the duration of its heating. Optimizing the time of complex loads heating, which helps to reduce fuel consumption and improve the heated metal quality, requires knowledge of temperature fields in them, which, in turn, depend on the equivalent thermal conductivity of the complex load. For their calculations mathematical modeling can be used, which requires a highly qualified researcher. Carrying out of laboratory and experimental researches takes a lot of time and demands big material expenses, thus the received results are applicable only to a concrete charge. A number of authors give formulas for calculating the equivalent thermal conductivity of the strip coil. However, the practical use of such formulas is difficult due to the presence of difficult to determine parameters: the degree of the strip layers contact, thermal conductivity of different layers of strip and gas gaps between them, heat transfer coefficients by radiation in the gaps between layers. In this case, different formulas for calculating the equivalent thermal conductivity give signifi cantly different results. In the present work, for 20 steel strip coils with height, inner and outer diameters, respectively, 1; 0.4–0.966 m; with a strip thickness of 0.001; 0.003; 0.006 m, the number of layers per side 17; 25 and 50, for the coefficients of strip coil filling 0.70; 0.75; 0.80; 0.85; 0.90; 0.95; 0.97; 0.99, 0.999, the degrees of the strip layers contact 2.8–3.0% and different heated media (air, nitrogen, hydrogen), the reduced thermal conductivity coefficients were calculated according to various formulas using the MathConnex mathematical package (part of MathCadPro). On the basis of the conducted researches the formula for calculation of equivalent thermal conductivity of strip coils is chosen. The results of the calculation are in good agreement with the literature data, it can be used to calculate temperature fields and thermophysical parameters in layered metal loads, as well as to calculate their heating time and furnace performance.
Simulation of the metallic powder mixing process and deterministic formation of homogeneity
Authors: Evseev A. V. , Preys V. V. , Proskuryakov N. E. , Lobanov A. V.
Published: March 2021

This paper describes a mathematical model simulating the process of deterministic formation of a homogeneous mixture for making diamond abrasive tools. The process of modelling was divided into a few steps: – determining the capacity of the screw feeders; – determining how far the material is thrown by the screw; – building a cross-section of the distributed material; – determining the concentration of components within the microareas of a given size and calculating the mixture quality. The model provides a detailed description of the dosing process. They are the parameters of this process that mainly determine the quality of the resultant mixtures giving them a well-organized structure so that the diamond grains were distributed in the cutting metal layer as evenly as is desired. The obtained results have been verified through a series of full-scale experiments conducted in a special-design mixer. Thanks to this process, the resultant tool has a higher performance as compared with the one produced with the help of existing techniques.
NEW APPROACH TO THE COMPREHENSIVE RECONSTRUCTION OF HISTORICAL QUARTERS
Authors: VAVILONSKAYA Tatiana V. , RAIKHEL Yulia L.
Published: March 2021

The article provides a retrospective analysis of existing approaches to the complex reconstruction of block buildings, which developed against the background of various scientifi c paradigms. Within the framework of the paradigm of territorial development management, a new investment and prognostic approach to the complex reconstruction of historical quarters is proposed on the example of Samara. The historic quarter is viewed as a planning module for the transformation processes of a sett lement. Reconstruction of the historical quarter is presented in the aggregate of problems of preserving and developing its buildings, providing residents with the necessary level of engineering, social and transport infrastructures. A method for calculating the rates of return for complex reconstruction is proposed, which serves to test the modes of the security zoning proposed for a historical sett lement. Particular att ention is paid to the preparation of initial data for calculating the rates of return for complex reconstruction for a number of quarters selected as reference.
Estrategias de construcción discursiva del microrrelato en Antonio Pereira:análisis de tres ejemplos
Authors: Morán Rodríguez Carmen
Published: March 2021

El artículo aborda el análisis de los procedimientos compositivos en tres cuentos hiperbreves de Antonio Pereira (1923-2009): “Una novela brasileña”, “Picassos en el desván” y “Pastoral”. En ellos pueden verse constantes de la escritura de este autor, tales como el juego entre lo enunciado y lo sugerido, entre realidad y ficción, el alcance metaficcional logrado en unas pocas líneas, el erotismo implícito, y la pericia en la selección de términos y la gradación de emociones a fin de lograr una extraordinaria densidad.