bluuebunny/crossref_metadata_2025 huggingface dataset:
Sedimentary Basin Reconstruction and Tectonic Development of Paleocene-Eocene Succession, Southern Iraq, by Geohistory Analysis
Authors: Menshed Mahdi Ali , Al-Zaidy Aiad Ali Hussien
Published: May 2021

The Paleocene-Early Eocene sequence is represented by Aliji and Umm Er Radhuma formations, while the Middle-Late Eocene sequence is represented by Jaddala and Dammam formations. The Rus Formation has been described and its basin was analyzed separately because it was deposited during the regression period (Middle Eocene), which is a transitional period between these two cycles.  

This study includes analysis of the geohistory of this succession,  interpretation of the changes of the accumulation, and calculation of subsidence rates. The results were compared with the space available to explain the basin development. The study site included the boreholes of Garraf-84 and 92, Halfaya-1, Nasirya-13 and 40, and Noor-5 at the Mesopotamian Block, in addition to the  Ratawi-8, Tuba-15, Rumaila-217, Zubair-45, and West Qurna-60 at the Basra Block.

     The Aliji basin was characterized by the decrease in accommodation values to the northeast direction and the increase in all the other parts of the study area. A comparison of the setting of this basin with the Umm Er Radhuma basin gives a clear evidence of the tectonic impact coming from the northeast. During the Middle Eocene stage, we notice that the basin was affected by comprehensive uplifting processes. This led to the generation of a very shallow basin (Rus basin) with the exposure of the northern part of the basin during the regression stage.

     The Middle-Late Eocene basin is represented by a transgression stage with high subsidence, where the sea level had been raised and covered the northeastern and eastern parts of the studied area by deep sea deposits (Jaddala Formation). While the other parts of the study area were characterized by shallow sediments of Dammam Formation. This period ended with a clear tectonic uplift occurring in the northeastern parts and decreasing towards the southwest. This confirms the reactivation of the tectonic action from the northeast, represented by the continental collision.

All these sources of evidence indicate that the study area is divided into a northern part and a southern part. Both of these parts are separated by a major tectonic lineament extending from the West Qurna oil field to the Nasiriya oil field, which confirms the presence of the tectonic boundary between the Mesopotamian block and the Basra block. In addition, there exists a secondary tectonic boundary that divides the Mesopotamian block into two parts, the first is to the east and the other is to the west. The results showed that the eastern side was most affected by the collision of the Iranian Plate with the Arabian Plate, which led to its uplift, while the western side was less affected by this tectonics evidence.
On y-closed Dual Rickart Modules
Authors: Al-Bahrani Bahar Hamad , Rahman Mohammed Qader
Published: May 2021

In this paper, we develop the work of Ghawi on close dual Rickart modules and discuss y-closed dual Rickart modules with some properties. Then, we prove that, if are y-closed simple -modues and if -y-closed is a dual Rickart module, then either Hom ( ) =0 or . Also, we study the direct sum of y-closed dual Rickart modules.
A Numerical Study on Cross Diffusion Cattaneo-Christov Impacts of MHD Micropolar Fluid Across a Paraboloid
Authors: K Kalyani , N Seshagiri Rao , M.V.V.N.L. Sudha Rani
Published: May 2021

Analyzing the impacts of Cattaneo-Christov flux, bioconvective Raleigh number and cross diffusion effects in electrically conducting micropolar fluid through a paraboloid revolution is assessed in this work. Non-dimensional equations are solved numerically using shooting technique with an aid of Matlab software. The impact of various parameters on velocity, temperature and concentration are discussed in detail and presented graphically. Harman number and micro rotation parameters are found and have an increasing influence on shear stress. The vertical velocity increases at free stream and the horizontal velocity increases near the surface when Grb increases, which follows the opposite trend for accumulation of Rb. The numerical results are compared with the available data indicating good agreement in a limiting case.
A study of m-N-extremally Disconnected Spaces With Respect to, Maximum mX-N-open Sets
Authors: Salih Ahmed A. , Ali Haider J.
Published: May 2021

The aim of this research is to prove the idea of maximum mX-N-open set, m-N-extremally disconnected with respect to t and provide some definitions by utilizing the idea of mX-N-open sets. Some properties of these sets are studied.
S-K-nonsingular Modules
Authors: Shyaa Farhan Dakhil , Hadi Inaam Mohammed Ali
Published: May 2021

In this paper, we introduce a type of modules, namely S-K-nonsingular modules, which is a generalization of K-nonsingular modules. A comprehensive study of these classes of modules is given.
Enhanced Supervised Principal Component Analysis for Cancer Classification
Authors: Mahdi Ghadeer JM , Kalaf Bayda A. , Khaleel Mundher A.
Published: May 2021

In this paper, a new hybridization of supervised principal component analysis (SPCA) and stochastic gradient descent techniques is proposed, and called as SGD-SPCA, for real large datasets that have a small number of samples in high dimensional space. SGD-SPCA is proposed to become an important tool that can be used to diagnose and treat cancer accurately. When we have large datasets that require many parameters, SGD-SPCA is an excellent method, and it can easily update the parameters when a new observation shows up. Two cancer datasets are used, the first is for Leukemia and the second is for small round blue cell tumors. Also, simulation datasets are used to compare principal component analysis (PCA), SPCA, and SGD-SPCA. The results show that SGD-SPCA is more efficient than other existing methods.
Intelligent Agent Services in Electronic Libraries
Authors: Qader Reem A. , Sahib Naji M.
Published: May 2021

Global services with an agent or a multi-agent system are a promising and new research area. However, several measures have been proposed to demonstrate the benefits of agent technology by supporting distributed services and applying smart agent technology in web dynamics. This paper is designed to build a Semantic Web on the World Wide Web (WWW) to enhance the productivity of managing electronic library applications, which poses a problem to researchers and students, represnted by the process of exchanging books from e-libraries, where the process is slow or the library needs large system data.
A Genetic Algorithm for Task Allocation Problem in the Internet of Things
Authors: Burhan Hussein M. , Abbas Mustafa N. , Attea Bara'a A.
Published: May 2021

In the last few years, the Internet of Things (IoT) is gaining remarkable attention in both academic and industrial worlds. The main goal of the IoT is laying on describing everyday objects with different capabilities in an interconnected fashion to the Internet to share resources and to carry out the assigned tasks. Most of the IoT objects are heterogeneous in terms of the amount of energy, processing ability, memory storage, etc. However, one of the most important challenges facing the IoT networks is the energy-efficient task allocation. An efficient task allocation protocol in the IoT network should ensure the fair and efficient distribution of resources for all objects to collaborate dynamically with limited energy. The canonical definition for network lifetime in the IoT is to increase the period of cooperation between objects to carry out all the assigned tasks. The main contribution in this paper is to address the problem of task allocation in the IoT as an optimization problem with a lifetime-aware model. A genetic algorithm is proposed as a task allocation protocol. For the proposed algorithm, a problem-tailored individual representation and a modified uniform crossover are designed. Further, the individual initialization and perturbation operators (crossover and mutation) are designed so as to remedy the infeasibility of any solution located or reached by the proposed genetic algorithm. The results showed reasonable performance for the proposed genetic-based task allocation protocol. Further, the results prove the necessity for designing problem-specific operators instead of adopting the canonical counterparts.
Antimicrobial effect of a cyclic peptide Nostophycin isolated from wastewater cyanobacteria, Nostoc calcicola
Authors: Gupta Vaishali , Vyas Deepak
Published: May 2021

Different types of peptides are produced by cyanobacteria of the genus Nostoc, which are unique in structure and have a wide spectrum of biological activities. The objective of the study to explore different habitats of organism and study antimicrobial activities to improve their pharmaceutical application and drug like properties by structure modification. A cyclic peptide nostophycin was isolated from Nostoc calcicola (MK506349) through freeze dried lyophilization method. Its structure has been elucidated with FT-IR, 1HNMR, 13CNMR and LC-MS. Glycine, d-glutamine, l-phenylamine, d-isoleucine, l-proline and a novel amino acid Ahoa are constituents of nostophycin. 1HNMR, 13CNMR spectroscopy confirmed the number of protons and carbons, and characteristics peak determined the structure and fragmentation pattern through LCMS.  Nostophycin possess Ahoa instead of Adha which makes it different from microcystin. Nostophycin exhibits antimicrobial activity against E.coli, S. aureus, C. albicens and A. niger. A good antifungal activity (9-52 μg/mL) and moderate  antimicrobial activity (concentration 18-52 μg/mL) were found for nostophycin. In case of already known peptides, these molecules may be further exploited to improve pharmaceutical application and future drug development.
A utilização de métodos não farmacológicos para o alívio da dor durante o trabalho de parto e parto
Authors: França Graziela Santos da , Lima Catarina Maria , Sarah Thamires Lima , Santos Gabriela Romão de Almeida Carvalho , Oliveira Letícia Loss de , Souza Rodrigo Rocha de
Published: May 2021

Objetivo: identificar quais são os métodos não farmacológicos utilizados para alívio da dor durante o trabalho de parto e parto. Métodos: Trata-se de uma revisão integrativa realizada nas bases de dados Scientific Electronic Library Online (SciELO) e Pubmed, por meio dos Descritores em Ciências Saúde: “Dor do parto”, “Terapias complementares” e “Trabalho de parto” e os Medical Subject Headings: “Labor pain”, “Complementary therapy” e “Labor”. Os critérios de inclusão foram artigos nos idiomas português, inglês ou espanhol, com texto completo, que abordassem a temática, de 2015 a 2020. Como critérios de exclusão, artigos repetidos nas bases de dados, incompletos e fora do período estipulado, sendo selecionados 30 estudos. Resultados: Identificou-se inúmeros métodos não farmacológicos para alívio da dor durante o trabalho de parto e parto, entre eles auriculoterapia, acupressão, acupuntura, aromaterapia, musicoterapia e massagens. Considerações finais: Através desse estudo identificou-se quais são os métodos não farmacológicos utilizados para alívio da dor no trabalho de parto e parto, verificando a eficácia desses métodos, sendo eles diversificados e com baixo custo.
Nurses indispensable role during COVID-19
Authors: Kaur Simaranjit , Kaur Kirandeep
Published: May 2021

There is a new public health crisis threatening the world with the emergence and spread of 2019 novel coronavirus (2019-nCoV) or the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), as it is now called, is rapidly spreading from its origin in Wuhan City of Hubei Province of China to the rest of the world. Coronaviruses are enveloped positive-sense RNA viruses that are diversely found in humans and wildlife originated in bats ranging from 60 nm to 140 nm in diameter with spike-like projections on its surface giving it a crown-like appearance under the electron microscope, hence the name coronavirus. A total of six species have been identified which are known to infect the neurological, respiratory, enteric, and hepatic systems. The epicenter of infection was linked to seafood and exotic animal wholesale markets in the city. SARS-CoV-2 is highly contagious and has resulted in a rapid pandemic of COVID-19. As the number of cases continues to rise, it is clear that these viruses pose a threat to public health. The disease is transmitted by inhalation or contact with infected droplets and the incubation period ranges from 2 to 14 days. The symptoms are usually fever, cough, sore throat, breathlessness, fatigue, and malaise among others. The disease is mild in most people; in some (usually the elderly and those with comorbidities), it may progress to pneumonia, acute respiratory distress syndrome (ARDS), and multiorgan dysfunction. Many people are asymptomatic. The case fatality rate is estimated to range from 2 to 3%. Treatment is essentially supportive; role of antiviral agents is yet to be established. Prevention entails home isolation of suspected cases and those with mild illnesses and strict infection control measure at hospitals that include contact and droplet precautions. The global impact of this new epidemic is yet uncertain. We conducted a literature review of publicly available information to summarize knowledge about the pathogen and the current epidemic. In this literature review, the causative agent, epidemiology, pathogenesis, diagnosis, and nurses role regarding disease, control, and prevention strategies are all reviewed. It will also provide a means to raise awareness among primary and secondary health-care providers during the current pandemic.
Pengembangan Integrasi Sistem Unit Pelaksana Penimbangan, Pengujian Kendaraan Bermotor Dan Terminal Pada Tunggal Data Kendaraan
Authors: Wasiso Ichsan , Kusrini Kusrini , Kurniawan Mei Parwanto
Published: May 2021

Pembangunan sistem informasi di UPPKB (Unit Pelaksana Penimbangan Kendaraan Bermotor), Terminal Bus, dan PKB (Pengujian Kendaraan Bermotor) dari berbagai penyedia ini telah menghasilkan permasalahan tersendiri. Belum adanya hubungan antara sistem informasi pada data kendaraan yang sangat mungkin dilakukan mengakibatkan terjadinya double entri data kendaraan sehingga mengurangi kemudahan dan kecepatan pengguna dalam melakukan operasional sistem informasi tersebut. Salah satu solusi yang dapat dilakukan untuk mengatasi permasalahan tersebut dengan menggunakan teknologi web service yang terintegrasi. Arsitektur yang digunakan dalam teknologi web service menggunakan metode REST yang mampu menjembatani integrasi data pada masing-masing sistem informasi dari berbagai penyedia yang ada tanpa harus membangun dari awal sebuah sistem baru. Pertukaran data dilakukan dengan menggunakan JSON. Petugas dapat memanfaatkan teknologi tersebut untuk memperoleh data kendaraan secara cepat dan mudah dari sumber data yang telah ditentukan oleh pemerintah. Sebuah server dibutuhkan sebagai tempat pertukaran data kendaraan dari berbagai sistem yang ada. Dengan demikian masing-masing sistem yang sudah ada hanya berhubungan dengan satu server tersebut untuk mendapatkan integrasi data dari berbagai sistem antar daerah. Dengan integrasi sistem ini maka double entri data kendaraan dari beberapa unit dapat dipangkas. Selain menghemat hardisk penyimpanan, integrasi sistem ini dapat mempermudah dan mempercepat proses entri data kendaraan. Pencarian informasi kendaraan menjadi lebih cepat dan lebih mudah
Evaluasi Tingkat Kesuksesan Sistem Informasi Penerimaan Mahasiswa Baru Menggunakan Metode Hot Fit
Authors: Yulianto Donny , Utami Ema , Nasiri Asro
Published: May 2021

Sistem informasi penerimaan mahasiswa baru merupakan sistem yang sangat mendasar dan dibutuhkan bagi perguruan tinggi serta merupakan ujung tombak pemasaran untuk mendapatkan jumlah mahasiswa yang diharapkan. Tujuan penelitian ini adalah untuk mengetahui pengaruh dan besarnya nilai antar variabel pada sistem informasi penerimaan mahasiswa baru (PMB) yang ada di STKIP Widya Yuwana. Serta untuk mengetahui variabel mana yang paling berpengaruh terhadap tingkat kesuksesan sistem informasi. Metode yang digunakan adalah metode Hot-Fit dan SEM PLS sebagai alat uji statistik. Metode Hot-Fit mengevaluasi sistem dengan menggunakan variabel penggunaan sistem, kepuasan pengguna, struktur, lingkungan, kualitas sistem, kualitas informasi, kualitas layanan, dan net benefit. Pengujian akan dilakukan terhadap 16 hipotesis. Dari hasil penelitian 10 hipotesis dinyatakan diterima dan 6 dinyatakan hipotesis tidak diterima. Variabel yang berpengaruh kuat pada kesuksesan sistem informasi penerimaan mahasiswa baru di STKIP Widya Yuwana adalah variabel kualitas informasi dengan nilai 0,907, kualitas sistem dengan nilai 0,886 dan penggunaan sistem dengan nilai 0,882. Variabel yang berpengaruh lemah adalah variabel net benefit dengan nilai 0,572, struktur dengan nilai 0,804, dan kualitas layanan dengan nilai 0,807. 
Perancangan Struktur Tata Kelola Data di Pemerintah Daerah Menggunakan Framework Data Management Body Of Knowledge
Authors: Wibowo Nugroho Setio , Utami Ema , Fatta Hanif Al
Published: May 2021

Sesuai Peraturan Presiden no 39 tahun 2019 tentang Satu Data, untuk memperoleh Data yang akurat, mutakhir, terpadu,, mudah diakses, dan dibagipakaikan, diperlukan perbaikan tata kelola Data yang dihasilkan oleh pemerintah. Studi kasus penelitian ini di Pemerintah Kabupaten Trenggalek Jawa Timur di 35 Organisasi Perangkat Daerah (OPD) dengan metode kuisioner dan wawancara untuk penggalian permasalahan data. Perumusan pengolahan data menggunakan pedoman Data Management Body Of Knowledge (DMBOK. Data Management Body Of Knowledge (DMBOK)  merupakan salah satu  framework tata kelola data yang memberikan pendekatan model tata  kelola data secara fungsional, lengkap dan menyeluruh dalam membangun tata kelola data di organisasi. Penelitian ini merumuskan struktur tatakelola data, peran tata kelola data dalam struktur organisasi pemerintahan Kabupaten Trenggalek, peran aktivitas tata kelola data dan pemetaan solusi 18 masalah data di Pemerintah Kabupaten Trenggalek berdasarkan pedoman DMBOK. Hasil dari penelitian ini menunjukkan bahwa tata kelola data dengan pedoman DMBOK dapat digunakan sebagai solusi  untuk masalah data yang terjadi. Struktur tata kelola data yang telah dirancang diharapkan dapat membantu Kabupaten Trenggalek dalam mengimplementasikan tata kelola data di pemerintah daerah secara efektif
Analisis Perkembangan Bisnis Online Mahasiswa Karawang Menggunakan Metode Customer Satisfaction Index (CSI)
Authors: Hannie Hannie , Istiningdias Dini Sri , Enri Ultach
Published: May 2021

Saat ini banyak mahasiswa melakukan usaha bisnis pada masa perkuliahan. Masa kuliah adalah masa yang tepat bagi mahasiswa untuk memulai usaha bisnis karena mahasiswa dapat belajar langsung menghadapi tantangan dunia kerja. Berbekal kreativitas, peluang dan keberanian dalam mengambil resiko maka mahasiswa dapat melakukan usaha bisnis online untuk memasarkan produknya lebih luas. Analisis yang dilakukan pada penelitian ini bertujuan untuk mengukur perkembangan bisnis online di kalangan mahasiswa Universitas Singaperbangsa Karawang. Atribut pelayanan jasa dapat dijadikan masukkan dalam meningkatkan bisnis online mahasiswa dengan menggunakan metode Customer Satisfaction Index (CSI). Penelitian dilakukan di Universitas Singaperbangsa Karawang. Data penelitian diperoleh dari kuesioner yang dibagikan secara online menggunakan Google Form. Metode pengambilan sample yang digunakan yaitu metode nonprobability sampling dengan jenis purposive sampling, dimana teknik penentuan sampel berdasarkan kriteria yaitu mahasiswa Universitas Singaperbangsa Karawang dan mempunyai usaha bisnis. Uji pengolahan data menggunakan Uji Validitas dan Uji Realibilitas. Perhitungan Customer Satisfaction Index menunjukkan hasil sebesar 74,49 %. Hasil tingkat kepuasan diantara 66 % - 80 % menunjukkan bahwa mahasiswa puas dengan perkembangan bisnis online.
Unusual Manifestations of Paraprotein-Associated Hematological Diseases: Report of 2 Cases and Literature Review
Authors:   Department of Internal Medicine, National and Kapodistrian University of Athens, Greece, S Karakatsanis , SS Papadatos ,   Department of Internal Medicine, National and Kapodistrian University of Athens, Greece, D Polyzos ,   Department of Internal Medicine, National and Kapodistrian University of Athens, Greece, A Gravani ,   Department of Internal Medicine, National and Kapodistrian University of Athens, Greece, N Syrigos ,   Department of Internal Medicine, National and Kapodistrian University of Athens, Greece, A Tsakania ,   Department of Blood Transfusion, “Sismanogleio” General Hospital, Greece, G Kanellis ,   Department of Hematopathology, Evangelismos General Hospital, Greece, L Marinos ,   Department of Hematopathology, Evangelismos General Hospital, Greece, A Papanikolaou ,   Department of Hematopathology, Evangelismos General Hospital, Greece
Published: May 2021

With this review we firstly describe uncommon manifestations of paraprotein-associated hematological diseases in 2 patients presenting with hemoptysis. The differential diagnosis in both cases included qualitative and quantitative platelet abnormalities, infectious diseases, malignancies, vasculitis, collagen diseases and blood disorders. Among other interventions undertaken, bone marrow biopsy provided evidence of a primary hematological disease while serum protein electrophoresis and immunofixation indicated the presence of a paraprotein. As a “take-away” lesson from the literature review performed on the basis of these cases the bleeding diathesis that is occasionally associated with paraproteinemia should be pointed out, irrespectively of the primary hematological condition. Thus, while investigating a patient with bleeding diathesis, at least a serum protein electrophoresis should be among the requested laboratory tests. Moreover, clinical vigilance is required in order to recognize other unusual manifestations of not so unusual hematological abnormalities.
Massive Bone Marrow Carcinomatosis Presenting with Leukoerythroblastic Blood Reaction
Authors:   General Hospital of Alicante, Spain, Garzo Ana , Belmar J Verdu ,   General Hospital of Alicante, Spain, E Campos ,   General Hospital of Alicante, Spain, FJ De Paz ,   General Hospital of Alicante, Spain, F Tarin ,   General Hospital of Alicante, Spain
Published: May 2021

We present a case of an extensive bone marrow infiltrate of poorly differentiated carcinoma, in a 19-year-old male with suspected progression of sinusal undifferentiated carcinoma, after several lines of treatment.
Lidocaine Toxicity in a Patient with Liver Cirrhosis Underwent Transcatheter Aortic Valve Implantation
Authors:   Department of Cardiology, Soroka University Medical Center, Israel, AA Dogosh , A El Nasasra ,   Department of Cardiology, Soroka University Medical Center, Israel, D Zahger ,   Department of Cardiology, Soroka University Medical Center, Israel, C Cafri ,   Department of Cardiology, Soroka University Medical Center, Israel
Published: May 2021

Background: Lidocaine has been commonly used in many clinical settings. Nonetheless, systemic toxicity can be life-threatening and careful attention to dosing, especially among patients with liver dysfunction is important to minimize the risk of toxicity. Objective: The diagnosis of lidocaine toxicity is usually clinical, while rare, but may prove fatal. Methods: Here we discuss 60 years-old man with advanced liver cirrhosis, developed lidocaine-induced cardiovascular and neurotoxicity. Results: Our case study demonstrates a successful treatment of cardiovascular and neurotoxicity with intravenous lipid emulsion in the context of systemic lidocaine toxicity in a liver cirrhosis patient who received lidocaine as a local anesthetic. Conclusions: A high index of suspicion should be maintained for severe toxicity even after subcutaneous administration and prompt intralipid administration may prove lifesaving.
Natural Killercell Deficiency (NKD)
Authors:   Department of Immunology, Armed Forces Institute of Pathology (AFIP), Pakistan, M Hussain , HN Tipu ,   Department of Immunology, Armed Forces Institute of Pathology (AFIP), Pakistan, D Ahmed ,   Department of Immunology, Armed Forces Institute of Pathology (AFIP), Pakistan, M Alam ,   Department of Immunology, Armed Forces Institute of Pathology (AFIP), Pakistan, S Sheikh ,   Department of Immunology, Armed Forces Institute of Pathology (AFIP), Pakistan, Y Ijaz ,   Department of Immunology, Armed Forces Institute of Pathology (AFIP), Pakistan
Published: May 2021

Natural Killer Cell Deficiency (NKD) alone is a rare disorder of innate immune system.Isolated NK cell is deficiency can be classical or functional. In classical Natural killer cell deficiency, NK cells are ≤1% of peripheral blood lymphocytes whereas functional NK cell deficiency is associated with decrease ability to perform its function. NKD makes patients more prone to viral infections (especially with Herpes, Varicella zoster, Cytomegalo & Ebsteinbarr viruses) and malignancies. This defect should be suspected in patients with repeated fever and chest infections, when all other causes of primary immunodeficiency are ruled out. A 2-years-female patient with repeated chest infections, on off fever since the age of 7 months with very poor to antibiotics and negative blood culture on several occasions. Lymphocyte subset analysis repeated at a gap of two months and a final diagnosis of Natural killer cell deficiency was established.
Digitization of analog signals
Authors: Zaitsev A. V.
Published: May 2021

We live in the world of digital technologies – everyone has a digital phone, television has switched to a digital broadcasting format as it is more noise-immune, digital processes are literally in every household appliance, from the iron to the computer on which this article was written. Digital technologies simplify our lives, some operations performed by humans require large material costs, for example, writing text on a typewriter and computer vary greatly. The gain of the computer is especially evident when editing the test. They brought us comfort – how nice it is when the processor that monitors the temperature in the house increased the heat supply during a cold snap or reduced it in order to save money in the absence of people in the house.

But in order for the digital system to perform this or that action, it needs a command coming from the sensor. It can be a temperature, humidity, pressure sensor. Or maybe a microphone used in voice control systems. All these sensors, without which the operation of a digital system is impossible, give an analog signal that changes its value over time. The digital system is not sensitive to such a signal. It “does not understand” the signal. The problem is solved by ADC (analog-to-digital converters). They have a different structure, varying degrees of complexity, the device, depending on the parameters of the digitized signal. For example, the temperature in the house changes very slowly, even when warming up or when the heating is turned off in frost, the temperature rises or, accordingly, does not fall faster than one degree per hour. The ADC speed requirements for the temperature sensor are very low. Instead, a microphone is used to receive voice commands. In order to distinguish the voices of people and to carry out the commands of some people and not to carry out commands from others, processing of the signal spectrum with a width of kilohertz is required - which means that the signal level will change at a frequency of thousands of times per second. This is a very high demand. The different types of ADCs, their design and application will be discussed in this article.
Synthesis of the Trans-Syn-Trans Perhydrobenzo[f]chromene Ring System
Authors: AlKhdhairawi Amjad Ayad Qatran , Imran Syahrul , Manshoor Nurhuda , Cordell Geoffrey A. , Nagojappa Narendra Babu Shivanagere , Weber Jean-Frédéric , Al-Khdhairawi Amjad Ayad Qatran
Published: May 2021

A stereoselective synthesis of the trans-syn-trans perhydrobenzo[f]chromene skeleton is presented. The target compound 3 was achieved in six steps starting from the (S)-(+)-Wieland-Miescher ketone. Key steps include the sp2 alkylation at the a-carbon of an unsaturated ketone, Birch-type reductive alkylation, and an acid-catalyzed cyclization.
ОСОБЕННОСТИ ПРЕПОДАВАНИЯ СПИРОМЕТРИЧЕСКОГО МЕТОДА ВРАЧАМ В ПОСЛЕДИПЛОМНОМ ОБУЧЕНИИ
Authors: Калуга А. А. , Тарадин Г. Г. , Ракитская И. В. , Могилевская К. Э. , Приколота О. А. , Маловичко И. С.
Published: May 2021

В статье рассматриваются особенности преподавания спирометрического метода на кафедре терапии факультета интернатуры и последипломного образования им. проф. А.И. Дядыка ГОО ВПО ДОННМУ ИМ. М.ГОРЬКОГО. Кратко описывается история создания спирографии. Подчеркиваются преимущества этого метода диагностики и актуальность его изучения врачами в последипломном обучении. Особое внимание уделяется вопросам преподавания этого метода слушателям, включая обсуждение подготовки к исследованию, технических особенностей аппаратуры, основных показаний и противопоказаний, этапов проведения исследования и ключевых оцениваемых параметров. Детально освещаются варианты интерпретации результатов, полученных в ходе исследования. Отдельно рассматривается обучение основам проведения бронходилатационного и бронхоконстрикторных тестов.
ЦЕЛЕСООБРАЗНОСТЬ ПРИМЕНЕНИЯ ПЕНТОКСИФИЛЛИНА ПРИ COVID-19 (ЛИТЕРАТУРНЫЙ ОБЗОР)
Authors: Колесников А. Н. , Гридасова Е. И. , Кучеренко Е. А. , Кварацхелия Л. Г. , Гончаров В. В. , Скоробогатый Р. В.
Published: May 2021

Повсеместное распространение и тяжелое течение COVID-19 обусловило необходимость исследований в области патогенеза этого заболевания. В современной литературе COVID-19 рассматривают как тромбовоспалительный синдром сосудов, имеющий 2 основных патогенетических механизма – воспалительную реакцию и микроваскулярный тромбоз. Коагулопатия отмечается до 50% пациентов с тяжелыми проявлениями COVID-19. Следовательно, патогенетическая терапия COVID-19 должна включать антикоагулянтную терапию. Международным обществом по тромбозам и гемостазу (ISTH) и Американским обществом гематологов (ASH) для лечения COVID-19 рекомендованы низкомолекулярные гепарины, но их оптимальная дозировка неизвестна. В то же время пероральные антикоагулянты не следует использовать для лечения тромбоза у пациентов с COVID-19 из-за возможного негативного взаимодействия с противовирусными препаратами. В связи с этим ряд авторов считает, что пентоксифиллин может быть полезен для улучшения реологии крови и лечения пациентов с COVID-19, чему и посвящен данный обзор.
ВОЗМОЖНОСТИ ДИСТАНЦИОННОГО ОБУЧЕНИЯ В ФОРМИРОВАНИИ КОМПЕТЕНЦИЙ ПРИ ПРЕПОДАВАНИИ КЛИНИЧЕСКОЙ ФАРМАКОЛОГИИ
Authors: Налётов С. В. , Галаева Я. Ю. , Налётова О. С. , Сидоренко И. А. , Твердохлеб Т. А. , Белевцова Э. Л. , Конышева Н. В. , Алесинский М. М.
Published: May 2021

В статье рассматриваются вопросы применения дистанционного обучения при преподавании клинической фармакологии, основные задачи и формы освоения профессиональных компетенций студентами лечебных факультетов. Обсуждаются достоинства преподавания дисциплины в системе on-line, способствующие формированию клинического мышления, повышению интереса у студентов к дисциплине, развитию творческого подхода к обучению, и его недостатки.
Chemical properties, biological activities and ethnomedicinal uses of Maerua pseudopetalosa: A famine food species of tropical Africa
Authors: Alfred Maroyi
Published: May 2021

Maerua pseudopetalosa (Gilg & Gilg-Ben.) DeWolf  is  a perennial herb or subshrub collected from the wild as a food plant or traditional medicine. Maerua pseudopetalosa occurs naturally from Senegal, east to Eritrea and Ethiopia, through South Sudan, Sudan, East Africa, south to the Democratic Republic of Congo (DRC). This study is aimed at evaluating the chemical properties, biological activities and ethnomedicinal uses of M. pseudopetalosa. Results of the current study are based on data derived from several online databases such as Scopus, Google Scholar, PubMed and Science Direct, and pre-electronic sources such as scientific publications, books, dissertations, book chapters and journal articles. This study revealed that the fruit, leaf and root infusion and/or decoction of M. pseudopetalosa are mainly used as a stimulant and to restore physical strength and vitality, and traditional medicine for chest pains, breast cancer and cough. Phytochemical compounds identified from aerial parts, fruits, roots, seeds and tubers of M. pseudopetalosa  include quaternary ammonium compounds, alkaloids, amino acids, betaines, cardiac glycosides, fatty acids, essential oils, flavonoids, phenolics, sterols and tannins. Preliminary ethnopharmacological research revealed that aerial parts, roots and tubers of M. pseudopetalosa have antibacterial, antifungal, antihyperglycemic, antioxidant, α-glucosidase inhibitory, pancreatic lipase inhibitory and cytotoxicity activities. Maerua pseudopetalosa should be subjected to detailed phytochemical, pharmacological and toxicological evaluations aimed at correlating its medicinal uses with its phytochemistry and pharmacological properties.
Pengembangan Environmental Literacy Instrument Ranah Kognitif Untuk Siswa Sekolah Dasar di Kabupaten Malang
Authors: Kusumaningrum Diana
Published: May 2021

Tujuan peneilitian ini adalah untuk mengetahui kevalidan dan reliabilitas dari instrumen literasi lingkungan ranah kognitif sehingga dapat digunakan sebagai acuan untuk pengembangan instrumen literasi lingkungan ranah kognitif yang lainnya. Penelitian ini merupakan penelitian pengembangan (R&D) dengan menggunakan model pengembangan Borg & Gall. Subjek penelitian adalah siswa SD (sekolah dasar) kelas V di Kabupaten Malang tahun ajaran 2018/2019. Banyak subjek penelitian ini sebanyak 98 siswa. Hasil dari pengukuran validitas isi dan konstruk didapat bahwa produk yang dikembangkan telah valid dan dapat dilanjutkan pada tahap pengembangan produk selanjutnya. Tahap berikutnya adalah pengukuran validitas empiris yang terdiri dari pengukuran reliabilitas dan validitas produk pada uji coba lapangan pendahuluan dan uji coba lapangan utama. Hasil uji coba lapangan pendahuluan didapat hasil bahawa ada dua soal yang tidak valid dari 30 soal sehingga perlu adanya revisi. Hasil reliabilitas uji coba lapangan pendahuluan didapat hasil bahwa produk yang dikembangkan reliabel. Hasil uji coba lapangan utama didapat hasil bahawa semua soal valid dan reliabel.
Kompetensi Teknologi, Pedagogi, dan Konten Guru SD Negeri dan Swasta di Kota Cimahi, Jawa Barat
Authors: Rochaendi Endi , Wahyudi Andi , Perdana Riki
Published: May 2021

Guru SD dituntut untuk memiliki pengetahuan konten (content) mata pelajaran, pengetahuan pedagogi (pedagogy), dan pengetahuan teknologi (technology) dalam bentuk pengetahuan yang integratif dalam pengelolaan pembelajaran. Penelitian ini bertujuan melihat dan menganalisis faktor-faktor apa saja yang paling dominan dalam membentuk kompetensi guru tersebut dalam aspek pengetahuan konten, pengetahuan pedagogi dan pengetahuan teknologi yang pada gilirannya dapat mengembangkan model pengembangan Technological Pedagogical and Content Knowledge (TPACK) yang sesuai untuk guru SD. Penelitian ini dirancang menggunakan pendekatan kuantitatif, dengan metode deskriptif dan verifikasi. Data dianalisis menggunakan statistik deskriptif dan analisis faktor konfirmatori (CFA) berdasarkan Partial Least Square (PLS). Hasil penelitian menunjukan bahwa faktor-faktor yang pengaruhnya paling dominan adalah pedagogical knowledge (0,944), technological content knowledge (0,942), dan technological pedagogical knowledge (0,935). Sedangkan,  pedagogical content knowledge, content knowledge, dan technological knowledge  tidak sepenuhnya membentuk TPACK guru SD tersebut.
Artificial Neural Network for Classifying Injected Materials under Ultrasonography
Authors: Utari Galuh Retno , Maslebu Giner , Trihandaru Suryasatriya
Published: May 2021

We have constructed an artificial neural network (ANN) architecture to classify four different classes of ultrasonography recorded from a jelly box phantom that was injected by iron, glass, or plastic marble, or without any injection. This jelly box was made as a phantom of a human body, and the injected materials were the cancers. The small size of the injected materials caused only little disturbances those could not easily distinguished by human eyes. Therefore, ANN was used for classifying the different kind of the injected materials. The number of original imagestaken from ultrasonographs were not so many, therefore we did data augmentation for providing large enough dataset that fed into ANN. The data augmentation was constructed by pixel shifting in horizontal and vertical directions. The procedure proposed here produced 98.2% accuracy for predicting test dataset, though the result was sensitive to the choice of augmentation area.
Synthesis, Crystal Structures, Electronic Spectra, and Magnetic Properties of Thiolato-Bridged Trinuclear Cobalt(II) Complexes with N, N, S-Tridentate Thiolate Ligands
Authors: Mikuriya Masahiro , Fujita Atsushi , Kotera Takanori , Yoshioka Daisuke , Sakiyama Hiroshi , Handa Makoto , Tsuboi Motohiro
Published: May 2021

New trinuclear CoII complexes, [{Co(apaet)2}2Co]X2 (apaet– = 2-[(3-aminopropyl)amino]ethanethiolato; X = SCN (1), ClO4 (2), NO3 (3), Cl (4), Br (5), I (6)) and [{Co(apampt)2}2Co]X2 (apampt– = 1-[(3-aminopropyl)amino]-2-methylpropane-2-thiolato; X = NO3(7), ClO4 (8), Cl (9), Br (10), I (11)), and mononuclear CoIII complexes, [Co(apaet)2]X (X = ClO4 (12), NO3 (13)), were synthesized. Single-crystal X-ray crystallography of 1 and 7 confirmed that the trinuclear complexes have a linear arrangement of octahedral CoIIS2N4-tetrahedral CoIIS4-octahedral CoIIS2N4 chromophores where two thiolate ligands are coordinated to each terminal Co atom in a mer coordination mode and the two thiolato S atoms are further bound to the central Co atom, which is consistent with the electronic spectra and antiferromagnetic properties
Aplicación de ácidos húmicos, quitosano y hongos micorrízicos como influyen en el crecimiento y desarrollo de pimiento
Authors: Reyes-Pérez Juan José , Rivero-Herrada Marisol , Solórzano-Cedeño Arturo Enedicto , Carballo-Méndez Fernando de Jesús , Lucero-Vega Gregorio , Ruiz-Espinoza Francisco Higinio
Published: May 2021

La aplicación de biofertilizantes y bioestimulantes influyen en varias respuestas fisiológicas de los cultivos, con ello se puede potencializar la calidad de las cosechas. Por lo cual la utilización de dichos productos puede minimizar la fertilización sintética, al mismo tiempo de incrementar la tolerancia al estrés biótico en el agroecosistema. Este estudio fue desarrollado con el propósito de valorar el impacto del quitosano, hongos micorrízicos y ácidos húmicos en el crecimiento de variedades de pimiento en condiciones protegidas. El método de prueba utilizado fue aleatorio en un factorial 2 × 4 con 3 réplicas, donde el primer factor fueron las variedades (Magaly y Lycal), y el segundo los bioestimulantes: ácidos húmicos (1:30v/v), quitosano (3 g L-1 de agua) y hongos micorrízicos (20 g de esporas ml-1), y un testigo (control) por cada variedad (sin aplicación de bioactivos). Los resultados demostraron que los tres bioactivos estudiados incrementaron entre 11.66 y 16.67% la germinación de las semillas, mientras que la emergencia fue potenciada por los ácidos húmicos y quitosano. Por su parte los ácidos húmicos produjeron plantas de mayor altura a los 25 y 45 días después de la siembra (ddt), y tallos de mayor diámetro. Esto a su vez incrementó la biomasa fresca y seca de las plántulas (339.38 y 106.72 g), de la misma manera influyeron en el incremento de frutos por planta (15.33 frutos), longitud, diámetro y peso (12.22 cm, 43.33 mm y 92.22 g). Se generaron valores mayores en el rendimiento de la variedad Magaly con 29.16 Mg ha-1. La variedad Magaly superó significativamente a la variedad Lycal en cuanto a germinación (96.67%), emergencia (95%), altura de plantas y diámetro del tallo (25 y 45 ddt).
Efecto de sustancias azucaradas en la descomposición de sustratos orgánicos para la elaboración de compost
Authors: Álvarez-Sánchez Ana Ruth , Llerena-Ramos Luis Tarquino , Reyes-Pérez Juan José
Published: May 2021

El compost es una forma principal para degradar desechos de origen orgánicos; no obstante, todo el procedimiento requiere de largos tiempo de maduración por lo cual, es indispensable la búsqueda de formas rápidas para descomponer y transformar estos desechos en subproductos con alto valor agronómico. El objetivo de este estudio fue determinar el efecto de sustancias azucaradas en la descomposición de sustratos orgánicos para elaborar compost. Las sustancias investigadas fueron azúcar, melaza y jugo de caña (Saccharum officinarum), mezclados con un sustrato orgánico compuesto por 30% estiércol, 50% panca de maíz, 10% de restos de leguminosa, 9% de tierra y 1% de ceniza. El diseño experimental fue completamente al azar, con 16 unidades experimentales, un testigo absoluto y cuatro repeticiones. Las variables evaluadas fueron días para la descomposición, temperatura, humedad, peso del sustrato y contenido de nutrimentos. La melaza mezclada con residuos orgánicos disminuyó 6 días (9.68%) el período de descomposición, con relación al testigo (62 días). El tratamiento con melaza añadida presentó el mayor descenso de temperatura (8.7 ºC), aunque no se encontraron diferencias significativas entre tratamientos, al inicio y al final del ensayo. El contenido de humedad entre los tratamientos osciló entre 56.5 y 59.0%, sin embargo, las diferencias no fueron significativas. El tratamiento con melaza fue el que presentó la mayor pérdida de peso (10.8 kg) durante la descomposición del sustrato orgánico; no obstante, no hubo diferencias en el pH y contenido de nutrimentos (B, Ca, Cu, K, Mg, N, P, S, Zn, M.O.). El tratamiento con mayor concentración de nutrimientos fue el conformado por sustancias orgánicas y melaza, por lo cual, se recomienda su uso o integración para acelerar el proceso de descomposición en el compost.
مكانة الممارسة في صناعة تحقيق النصوص: ثلاث صفحات من أيامي مع الشيخ شعيب الأرنؤوط
Authors: ÜRKMEZ Ahmed
Published: May 2021

يعتَبر التحقيق من أهم الوسائل لخدمة الثقافة الإسلامية والنصوص القديمة. وهو في حد ذاته فنٌّ يَستند على خلفية علمية، ويَقتضي مناهجَ سليمة، ويَتصدى إلى فنون عديدة. فلا يَنفرد التخريجُ والقدرة على إتقانه أو المخطوطات والإطلاع عليها إطارا كافيا لمفهوم التحقيق؛ بل يصحبهما أكثر من عنصر مثل الإستعداد والنقد والممارسة حتى يَتحقق معنى الكلمةِ وتَحصل الغاية.
كان الشيخ شعيب الأرنؤوط (ت.2016م) من أبرز أعلام هذا التخصص في العالم الإسلامي، وأكثرِهم نشرا ونشاطا. وقد حَقَّقَ من أصول الكتب في علوم شتى مثل التفسير، والحديث، والتاريخ، واللغة العربية ما هو معلوم عند أهله جودةً وإفادةً. ودَرَّب في نفس الوقت تلاميذ متقنين لعملية التحقيق في مكتبته التي أنشأها في عمان، وعمل هناك أربعين عاما ليلا ونهارا. فوجدنا أثناء مكوثنا في عمان سنة 1999 فرصة لمشاركة دروسه الخاصة التى ألقاها لنا في تحقيق النصوص، وسجلناها كل أسبوع بإذنه.
فهذا البحث يَعتمد على التسجيلات الصوتية المشارة إليها مع ما كتبَه الشيخُ شعيب الأرنؤوط في مقدمات تحقيقاته، ويُحاول أنْ يُثبت آرائه الرئيسية حولَ الموضوع مقارَنا بمحتوياتِ كتبِ التحقيق النظرية للأساتذة اللآخرين. وينقسن البحثُ إلى قسمين؛ أما القسم الأول، فيَشمل على مكانة الممارسة في صناعة تحقيق النصوص، ويتقرب نحو الموضوعِ من خمسة أوجه: شُمول صناعة التحقيق ومتطلباتُها، عدم الإكتفاء بالعلم النظري، إطْلاع الطالب على مصادر التحقيق، إسناد مفهوم التخريج إلى أصل ذهني متين، وعدم التحفظ عن النقد عند الحاجة إليه. وأما القسم الثاني من البحث فهو يُقدم ثلاث صفحات مختارة من يومياتنا التي كتبناه في عمان والتي تحتوي على فوائد علمية ووصايا فريدة من كلام الشيخ شعيب الأرنؤوط رحمه الله.
El sedentarismo y la actividad física en trabajadores administrativos del sector público / Sedentary lifestyle and physical activity in administrative public sector workers
Authors: Alvarez Graciela Mercedes , Guadalupe Vargas Mariana , Morales Murillo Herminia , Guadalupe Vargas Mariana , Morales Murillo Herminia , Robles Amaya Junes , Robles Amaya Junes
Published: May 2021

En el presente artículo se plantea como objetivo caracterizar el nivel de sedentarismo y actividad física, que realiza el personal administrativo de diferentes instituciones del sector público de la ciudad de Milagro, Ecuador, considerando algunos espacios como el lugar de trabajo, forma de traslado y tiempo libre. Se trata de una investigación de tipo descriptiva de corte transversal, con una muestra de 240 participantes, de los cuáles el 48,5% son de sexo masculino (109) y 51,5% femenino (131). Como instrumento se utilizó el Global Physical Activity Questionnaire (GPAQ), elaborado por la Organización Mundial de la Salud, aplicado en la versión corta en español-2002: Cuestionario Internacional de Actividad Física (IPAQ), que consta de 7 preguntas. Entre los principales resultados están que más del 54% del personal permanece sentado entre 7 y 12 horas diariamente. El 39% realiza una actividad moderada en su lugar de trabajo, el 8.8% actividad intensa y en su tiempo libre, el 67% de los participantes no realiza ningún deporte. Finalmente se concluye que al menos la mitad de los empleados administrativos de las empresas públicas en estudio, no realiza ninguna actividad que les permita disminuir el estado de sedentarismo.  ABSTRACTThis study aims to characterize the level of sedentary behavior and physical activity, of the administrative staff of various Organism of public sector at the city of Milagro, Ecuador, considering some areas as: the workplace, way of transportation, and their spare time. This is a descriptive research cross-section, with a sample of 240 participants, of which 48.5% are male (109) and 51.5% are female (131). The instrument that was used is the Global Physical Activity Questionnaire (GPAQ), prepared by the World Health Organization, implemented in the short Spanish version -2002: International Physical Activity Questionnaire (IPAQ), which consists of 7 questions. As main results are that more than 54% of staff remains seated between 7 and 12 hours daily. The 39% perform moderate activity in their workplace, 8.8% intense activity and in their spare time, 67% of participants did not perform any sport. Finally it was concluded that at least half of the administrative employees of public companies in the city of Milagro, do not perform any activity that allows them to reduce the state of inactivity.