bluuebunny/crossref_metadata_2025_split huggingface dataset:
In-Plane Permeability Measurement of Biaxial Woven Fabrics by 2D-Radial Flow Method
Authors: Khan Muhammad Azhar Ali 
Published: April 2021

Abstract
The accurate characterization of fabrics used in vacuum assisted resin transfer molding (VARTM) is essential in order to model the flow through these porous preforms. A wide range of these fabrics are available for composite manufacturing through VARTM and thus brings about a need to opt a methodology which characterizes the in-plane permeability of these preforms. These permeability values can then be used in simulations that can track the flow front progression and mold filling time. This work identifies the permeability of an E-glass fabric based on Darcy's law. Woven fabric having areal weight of 200 grams per square meter (gsm) is under consideration. The experiments are conducted at constant pressure conditions using 2D Radial flow method. Stereo microscopy of the preform material is done for detailed study of the weaving pattern. It is concluded that plain woven fabric exhibits anisotropic behavior when tested for in-plane permeability. Permeability is found to be higher in a direction which offers more interspacing between adjacent fibers threads causing more resin to flow in this direction.
Multivariate Markov-switching score-driven models: an application to the global crude oil market
Authors: Blazsek Szabolcs , Escribano Alvaro , Licht Adrian 
Published: April 2021

AbstractA new class of multivariate nonlinear quasi-vector autoregressive (QVAR) models is introduced. It is a Markov switching score-driven model with stochastic seasonality for the multivariatet-distribution (MS-Seasonal-t-QVAR). As an extension, we allow for the possibility of having common-trends and nonlinear co-integration. Score-driven nonlinear updates of local level and seasonality are used, which are robust to outliers within each regime. We show that VAR integrated moving average (VARIMA) type filters are special cases of QVAR filters. Using exclusion, sign, and elasticity identification restrictions in MS-Seasonal-t-QVAR with common-trends, we provide short-run and long-run impulse response functions for the global crude oil market.
A High-Pressure High-Temperature Column for the Simulation of Hydrothermal Water Circulation at Laboratory Scale
Authors: Frank Sascha , Zuber Philipp , Pollak Stefan , Heinze Thomas , Schreuer Jürgen , Wohnlich Stefan 
Published: April 2021

Abstract
Modeling the geothermal energy production cycle of a deep geothermal system at laboratory scale is challenging because of high-temperature and pressure conditions. In this work, a high-pressure high-temperature column to simulate production, heat transfer, and reinjection of a geothermal fluid in a fractured rock system is presented. The column includes two independently heated pressure vessels, a heat exchanger, and sensors for temperatures, pressures, flow rate, electric conductivity, and pH value of the circulating fluid at different locations. The presented column enables the quantitative analysis of coupled hydro-thermo-chemical processes in fractured rock cores close to in situ geothermal conditions. Heat extraction and reinjection of geothermal fluids into fractured reservoirs can be reproduced because of the possibility of heating and cooling of the circulating fluid. Further, it is possible to inject a second fluid phase into the column to investigate additional processes, such as mineral precipitation during reinjection. In this work, we present the experimental setup of the column and first results showing the capability of the system.
Anesthetic Preconditioning of the Small Intestine in Hemorrhagic Hypotension
Authors: Efremov A. V. , Khramikh T. P. , Govorova N. V. , Korpacheva O. V. 
Published: April 2021

Aim of the study. To investigate the preconditioning effect of sevoflurane on small intestinal mucosa in experimental hemorrhagic hypotension.Material and methods. The study was performed on a cohort of 106 male rats that included two experimental groups: one exposed to ether (Group 1, n=40) and another one exposed to sevoflurane (Group 2, n=40); two control groups included 20 intact animals, of which 10 were anesthetized with ether and 10 with sevoflurane. Six animals were excluded from the study because they died by the 2nd hour of hemorrhagic hypotension under ether anesthesia. The study parameters were measured at 15 min, 30 min, 1 h, and 2 h of hemorrhagic hypotension. Amylolytic activity of the small intestine mucosa was determined by E. A. Zabelinsky, B. W. Smith and I. M. Roe technique modified by A. M. Ugolev. The data were statistically analyzed using the nonparametric Mann-Whitney method.Results. By 15 min of hemorrhagic hypotension, the activity of amylase fractions in all small intestine regions in Group 2 animals was significantly lower vs the Group 1 rats. By 30 min of hemorrhagic hypotension, the activity of the enzyme fractions in all small intestine regions in Group 2 animals remained significantly lower than in Group 1, by an average of 2 to 9 times (P=0.01; P<0.001), and after 1 h of hemorrhagic hypotension, it was 2 and 4 times lower (P=0.02; P<0.001). By the 2nd hour of hemorrhagic hypotension, the activity of nearly all duodenal amylase fractions in the Group 2 animals remained 3-4 times lower compared to Group 1. Meanwhile, a significantly higher activity of slowly desorbing and intracellular amylase fractions vs the control group was observed in jejunum and ileum.Conclusion. In hemorrhagic hypotension under sevoflurane anesthesia, a decrease of the pancreas excretory function, stabilization of the brush border of the mucosa of all small intestine regions, including enterocyte membranes, was found during the first hour of experiment. Two hours after the hemorrhage, the biochemical evidence of brush border damage in the jejunum and ileum was revealed.
Anesthesia in Children with Thrombocytopenia During Bypass Surgery for Extrahepatic Portal Hypertension (Review)
Authors: Naleyev A. A. , Lazarev V. V. , Linkova T. V. 
Published: April 2021

Portal hypertension syndrome is one of the most severe pediatric conditions causing gastroesophageal bleeding which can be fatal. The main challenge in the management of portal hypertension is prevention of bleeding from the portal vein system, which is achieved by vascular surgery, particularly portosystemic shunting. Epidural anesthesia, despite its advantages over the opioid one, is not always performed in children with extrahepatic portal hypertension, and still remains unsolved issue in pediatric anesthesiology.Aim of the review: to evaluate the scope of limitations of general anesthesia in bypass surgery for extrahepatic portal hypertension in children with thrombocytopenia. We searched PubMed, Medline, Elibrary.ru and other databases and used original clinical observations while performing anesthesiologic support of surgical correction of extrahepatic portal hypertension in children.We found that general anesthesia for portosystemic bypass surgery in children with thrombocytopenia requires the anesthetic support that does not include epidural anesthesia and high-dose opioid administration. This issue can be resolved by including the central selective alpha-2-adrenergic agonist dexmedetomidine with both analgesic and hypnotic effects in the anesthesia support. Due to its additive effects, this drug significantly reduces the need for hypnotics and opioid analgesics while maintaining a high level of neurovege-tative protection.Conclusion. In our opinion, optimizing anesthesia in children with thrombocytopenia during bypass surgery for extrahepatic portal hypertension is essential to minimize surgical stress and side effects of drugs.
Atypical Fibroxanthoma: An unexpected cause of hemoptysis
Authors: Mantzouranis Konstantinos , Georgakopoulou Vasiliki Epameinondas , Chlapoutakis Serafeim , Melemeni Despoina , Damaskos Christos , Garmpis Nikolaos , Sklapani Pagona , Trakas Nikolaos , Tsiafaki Xanthi 
Published: April 2021

Atypical fibroxanthoma is an infrequent, low-grade superficial cutaneous neoplasm, usually presenting as a nodule or plaque of red color. It is considered as a superficial variant of pleomorphic dermal sarcoma. Although atypical fibroxanthoma has similar histologic features to pleomorphic dermal sarcoma, it has less aggressive behavior. Atypical fibroxanthoma usually occurs on sun-exposed regions of the head and neck of elderly patients. Ultraviolet light, specific genetic mutations and administration of immunosuppressive agents to transplant recipients have been associated with the pathogenesis of the tumor. The prognosis is typically excellent when treated with complete excision of the primary lesion. This report describes the rare case of a 84-year-old man with hemoptysis due to metastatic cutaneous atypical fibroxanthoma.
Sensory Perception in Lumbosacral Radiculopathy with Radicular Pain: Feasibility Study of Multimodal Bedside-Suitable Somatosensory Testing
Authors: Vaitkus Alfredas , Šipylaitė Jūratė 
Published: April 2021

Background. Somatosensory testing could be useful in stratifying pain patients and improving pain treatment guidelines. Bedside-suitable techniques are searched for application in daily clinical practice. This study aimed to characterize chronic unilateral lumbosacral radiculopathy (LSR) patients with radicular pain using multimodal bedside-suitable somatosensory testing.Materials and methods. We evaluated 50 chronic unilateral LSR patients with radicular pain (LSR group) and 24 controls (Control group). Sensory testing was performed using a battery of bedside sensory tests (10g monofilament, 200–400 mN brush, Lindblom rollers with controlled 25°C and 40°C temperature, and 40g neurological pin and investigator’s finger pressure). Participants had to rate their sensory perceptions on both legs at multiple test points within L3 to S2 dermatomes. Characteristics of the testing process and sensory disturbances were analyzed.Results. LSR group showed sensory disturbances in 82% of patients. The Control group showed no sensory disturbances. Sensory testing took longer (p < 0.001) in the LSR group (29.3 ± 6.5 minutes per patient) than in the Control group (20.5 ± 5.2). Nine sensory phenotypes were detected in the LSR group according to individual sensory disturbances within 5 superficial tests.Conclusions. The applied multimodal bedside-suitable somatosensory testing battery is suitable for sensory evaluation and characterization of LSR patients. Grouping of allied sensory phenotypes revealed some tendencies in pain intensity characteristics.
Felicidad, emociones positivas, evaluación cognitiva y afrontamiento en estudiantes universitarios de Lima Metropolitana
Authors: Loayza-Rivas José David 
Published: April 2021

Objetivo. El objetivo principal fue examinar la influencia de la felicidad, por medio de la evaluación cognitiva ylas emociones positivas, en el afrontamiento del estrés en estudiantes universitarios. Método. Participaron 352 personas, 70.2% mujeres y 29.8% hombres, con un rango de edad entre 19 y 35 años. Se realizaron modelos de ecuaciones estructurales (SEM, por sus siglas en inglés) para estimar la influencia de la felicidad en el proceso del estrés y el afrontamiento. Resultados. Los resultados mostraron correlaciones esperadas entre las variables y un buen ajuste de los modelos propuestos. La felicidad influye en la utilización de estrategias de afrontamiento adaptativas, a través de la evaluación cognitiva de desafío (β = .220; p < .001) yla experiencia de emociones positivas (β = .159; p = .001). Se concluye que la felicidad tiene un importante papel en el proceso del estrés y el afrontamiento.
An inventory to the requalification of the Ex European city in Biskra
Authors: Barbara Hiba , Molnár Tamás 
Published: April 2021

AbstractThe urban story of the Ex European city in Biskra presents an inevitable impact on the perceptive images of the Algerian cities. The examination of the building’s condition in the historical center indicates a deteriorated state in most of the structure caused by various degradations. The field study aims to classify the French quarter’s constructions according to multiple criteria, based on the identifications of related conservation statuses. Thus the census data contributes to the regeneration of the checkerboard condition while proceeding with the resolution of the threatening mutations - amplifying the qualities and potentials for a sustainable renewal of this built heritage.
Kronik Aort Yetmezliği Olan Hastalarda Hipertansiyon Sıklığı
Authors: YÜCEL Oguzhan , GÜNEŞ Hakan , YILMAZ Mehmet Birhan 
Published: April 2021

Amaç: Bu çalışmanın amacı kronik aort yetersizliğinde hipertansiyon sıklığını ve hipertansiyon ile kronik aort yetersizliğinin ciddiyeti arasındaki ilişkiyi araştırmaktır.
Gereç ve Yöntemler: Çalışma retrospektif olarak dizayn edilmiş olup aralık 2006 ile ocak 2009 tarihleri arasında Cumhuriyet Üniversitesi Tıp Fakültesi kardiyoloji polikliniğine başvuran ekokardiyografi ve 24 saatlik kan basıncı monitörizasyon yapılan 2457 hasta taranmıştır. Bu hastalardan orta ya da ileri
derecede sol ventrikül sistolik fonksiyon bozukluğu olan hastalar, herhangi bir başka kalp kapak hastalığı olanlar, aort darlığı, protez kalp kapağı veya herhangi bir kalp kapak hastalığından dolayı kardiyak cerrahi geçiren, kronik böbrek yetersizliği, kronik antihipertansif tedavi altında olan hastalar çalışma dışı
bırakılmış olup 135 kronik aort yetersizliği hastası çalışmaya dahil edilmiştir. Hastalar ekokardiyografik olarak aort yetersizliğinin ciddiyetine göre iki gruba ayrılmıştır. Bu iki grup sistolik ve diyastolik tansiyon değerlerine ve sıklığına göre karşılaştırılmıştır.
Bulgular: Ciddi aort yetersizliği olan hasta gurubunda gündüz ortalama diyastolik tansiyon arteriyel değerleri, gece ortalama diyastolik tansiyon değerleri ve tüm gün ortalama diyastolik tansiyon değerleri düşük olarak bulundu (p
Development of a method for the analysis of the lists of medicines and its application for the analysis of the lists of medicines in Russia, England, and Italy
Authors: Lemeshko V. A. , Matrenin K. I. , Omelyanovskiy V. V. , Vasilyeva Yu. V. , Khachatryan G. R. , Kolganov L. A. 
Published: April 2021

Objective: the development and approbation of the method for comparative analysis of the lists of medicines in different countries and systems of healthcare.Material and methods. Based on the open-access data on the lists of medicines published on official websites of the authorized regulators, the authors selected the national lists of medicines of Russia, England, and Italy for the development and approbation of the method. It was proposed to use three parameters: the absolute number of medicines by international nonproprietary name (INN); the structure of the lists based on anatomical therapeutic chemical (ATC) classification; and the coverage of the indications based on the International Classification of Diseases, 10th edition (ICD-10). The results of the analysis provided grounds for the review of the approaches to the formation of the lists of medicines required for medical help in Russia, England, and Italy and reimbursed from the state budget.Results. The number of medicines by INN in the national lists of England and Italy exceeds the total number of drugs included in the list of vital essential and desirable (VED) in Russia. All the analyzed lists were characterized by an uneven distribution of medicines within the lists by the ATC groups. The lists of medicines in England and Italy significantly exceed the list of VED by the number of the included medicines by all ATC groups excluding groups J and H in comparison with Italy, and groups J and V in comparison with England. At the same time, the list of VED significantly exceeds the list in England by the number of covered indications from the ATC L group. During the approbation, the method showed to be effective and can be used for further comparative studies of the national lists of medicines.Conclusion. Non-uniform lists of medicines by ATC-codes show that each country has priority areas in their healthcare systems. The list of VED can be shorter by the absolute number of the included medicines in England and Italy but it can exceed them by the coverage of indications due to peculiarities of the procedure of the list formation (reimbursement of medicines by all the registered indications). The results of the study with the proposed method can serve for the optimization of the VED list and the analysis of therapeutic areas that are undercovered.
Analisis Kelayakan Finansial Pola Tanam Berbasis Padi Gogo di Maluku
Authors: Santoso Agung Budi , Kaihatu Sheny , Waas Edwin 
Published: April 2021

The upland rice-based cropping pattern is a form of double cropping or crop rotation in which upland rice as a basic commodity (base crop) which can be preceded or alternated with other food crops as a secondary crop. This study was conducted on dry land agro-ecosystems in the Tanimbar Islands Regency (West Southeast Maluku), from March to December 2017. This study was an adaptive research with a field experiment approach in farmer's land. The objective of this research was to obtain the most profitable cropping patterns, efficiency in land use and economically also has the highest net profit so it is appropriate to be recommended as a technology innovation for upland rice-based cropping patterns in dry land. The results showed that upland rice which was cultivated in multiple ways through intercropping or overlapped cropping, namely Introduced Cropping Pattern 1 (Upland Rice + Maize-Peanuts) and Introduced Cropping Pattern 2 (Upland Rice + Corn/Cassava-Green Beans-Peanuts) can increase land productivity (index planting of 222% and 288%, respectively) and farmers' income increased by 244-588% compared to upland rice grown in monoculture. Multiple cropping patterns can be recommended as a technology package for upland rice-based cropping patterns on dry land because of its efficiency in the use of production costs and land use. Furthermore, it gave the highest farm income of IDR63,933,100,-/ha/year with a net profit of IDR45,716,380,-/ha/year or IDR15,238,793,-/ha/ cropping season.
Keywords: cropping pattern, farming, land use, upland rice
Analysis of Fire Catchers in Sago Palm Smallholding Plantations on Peatland in Tebing Tinggi Timur, Kepulauan Meranti District, Riau Province
Authors: Silviana Sinta Haryati , Muhammad Ahmad , Gunawan Haris , Basuki Imam 
Published: April 2021

Fire on peatlands takes place not only in areas where preparation for cultivation is in progress, but also in areas that have been cultivated, such as for sago palm growing. One of the important factors that influence the vulnerability of cultivated peatlands to fire is the availability and amount of biomass fuel that easily catches fire, such as ferns, grasses, and broadleaved shrubs in their living as well as dead (litter) stages. The present study concerns the vulnerability of peatland utilized for sago growing by smallholders, focused in Tebing Tinggi Timur, Kepulauan Meranti District, Riau Province. The objectives of this study were to analyze the composition and assess the biomass of fire catchers in the sago palm plantation. Data collection was conducted in three locations in Kepau Baru Village. In each location, a 1000 m-long transect line was drawn and 10 sampling plots of 2 m x 2 m were established along the line with 100 m intervals. Results showed that total biomass of fire catchers in this growing system was averaged at 24681 kg/ha, in which the dead plant fraction was predominating (average at 17478 kg/ha or 70.81%) over the living plant fraction (in average 7203 kg/ha or 29.19%). The latter consisted of ferns that averaged at 2.191 kg/ha or 30.42%, grasses (20 kg/ha or 0.28%), non-woody broadleaved shrubs (581 kg/ha or 8.07%), and woody broadleaved shrubs (4411 kg/ha or 61.24%). The amount of fire catchers in relatively large quantities in this plantation system could magnify fire risk during drier months, especially during El-nino years.
Keywords: biomass, fire risk, grasses, non-woody broadleaved shrubs, woody broadleaved shrubs
The In Vitro Screening of Drought Tolerant Potatoes (Solanum tuberosum L) of the Center for Tropical Horticulture Studies - IPB collections
Authors: Jolanda Laisina Jane Kathryne , Maharijaya Awang , Sobir Sobir , Purwito Agus 
Published: April 2021

In supporting the replacement of potato varieties with the varieties that are adaptive to drought, effective and fast methods are needed. One of which is through in vitro screening of drought-tolerant genotypes. The aims of this research were to determine the appropriate concentration of sorbitol as a critical limit in the in vitro screening process of drought-tolerant genotypes, as well as to determine vegetative characteristics that could be used as indicators of in vitro selection and also to obtain in vitro drought-tolerant genotypes. To achieve these objectives, we used single-nodal explants of seven genotypes cultured for six weeks on MS media added with four levels of sorbitol concentration. Of the four treatments, sorbitol level that could distinguish susceptible and tolerant plants was 0.2 M sorbitol and at this concentration, the characteristics that showed significant interactions were plant height and root length, so that both characteristics could be used as selection indicators for the analysis of tolerance tests for the seven genotypes. The results of tolerance test using the analysis of relative decline and stress-susceptibility index (SSI) showed that PKHT4 and PKHT6 were the genotypes that were tolerant in vitro.
Keywords: drought tolerant, in vitro, Solanum tuberosum, sorbitol
Identifikasi dan Uji Patogenisitas Colletotrichum spp. dari Cabai Merah (Capsicum annuum): Kasus di Kricaan, Magelang, Jawa Tengah
Authors: Sari Noorkomala , Kasiamdari Rina Sri 
Published: April 2021

The investigation of the agent causing diseases is the first step to determine and control the spread of diseases. Anthracnose causing fruit rot on the red pepper in Indonesia that reduces the yield up to 90%. Colletotrichum is reported as the causative fungal agent of anthracnosis on the red pepper. This study aims to determine the type of Colletotrichum spp. pathogenic fungi on the red pepper collected from Agricultural Field Kricaan, Magelang, Central Java. Methods of identification included macroscopic and microscopic characterization and followed by determining the pathogenicity of the pathogenic agent. In this study, Colletotrichum gloeosporioides and C. acutatum are identified as the causative agents of anthracnose in the red pepper collected from the study location. C. acutatum PC3 strain is identified as the most virulent pathogenic agent.
Keywords: anthracnosis, diagnosis, diseases, symptoms, pathogen