bluuebunny/crossref_metadata_2025 huggingface dataset:
Oxidative Stress Levels in Orthodontic Patients and Efficacy of Antioxidant Supplements in Combating Its Effects- A Randomized Clinical Study
Authors: Yamyar Sheetal , Daokar Suchita
Published: April 2020

Introduction: Orthodontic appliances are considered to be biocompatible although adverse effects attributed to release of nickel ion which are free radicals in oral cavity. These free radical produce damages both in cellular and extracellular components phospholipid membrane, proteins, mitochondrial and nuclear DNA leading to Oxidative stress which is normally counter balanced by the action antioxidant mechanisms. However in higher concentrations of free radicals resulting in cellular death and apoptosis Orthodontic appliances such as brackets, wire, resins has considered as potential allergen leading to release of free radicals. The study was conducted to determine and compare the role of oxidative stress and role of antioxidants in saliva of patients undergoing fixed orthodontic appliances therapy at different time intervals.

Materials & Method: A double-blinded, parallel, randomized clinical study was designed consisting of 40 healthy participants, aged 15-30yrs. The samples were divided into two groups Group A without antioxidants supplements and Group B with antioxidants supplements. Salivary MDA levels and gingival health index was recorded at different time intervals from each group. Salivary Lipid peroxidation (Malondialdehyde) level was estimated using Thiobarbituric acid (TBA) method and gingival status was investigated using Silness & Loe gingival index. Intragroup and intergroup comparison was statistically analyzed using student’s paired T test.

Result: Increased salivary MDA levels and mild to moderate amount of gingivitis is seen in both groups. This is more pronounced after 24 hours of appliance placement. Improvement in salivary MDA levels and gingival health status is observed during the course of treatment, In Group B the salivary MDA levels and gingival health index score reached below their pretreatment values. However even after a span of 3 months the levels remained higher to their base values in Group A.

Conclusion: Improvement in salivary MDA levels and gingival health status is observed following antioxidant therapy during course of treatment, indicating combating nature of antioxidant supplements in orthodontic patients.
Comparison of Knowledge and Attitude Towards Orthodontic Treatment Among High School Students
Authors: Dhakal Jyoti , Shrestha Manish , Shrestha Meenu , Acharya Asal
Published: April 2020

Introduction: Adolescence is the time when a person attains awareness including the self-awareness about his/her health. Hence if proper knowledge is instilled during this time, it will be effective and good oral health behavior can last lifetime. The aim of this study was to assess knowledge and attitude towards orthodontic treatment among the students of public and private schools and compare between them.

Materials & Method: A descriptive cross-sectional questionnaire-based study was performed among 700 students (350 from private and 350 from government schools around Kathmandu valley) of grade 8-10. Questionnaire consisted of 14 questions about knowledge and 10 questions about attitude relating to orthodontic treatment. Each response as “yes” was given score ‘1’ and responses “no” and “don’t know” were given score ‘0’. Total score was calculated, followed by mean and compared between that of private and government schools and between genders.

Result: No significant difference was found in the knowledge between the students of private and government schools. The difference in attitude score was found to be statistically significant (p=0.00). 54.29% of participants had never heard of an orthodontists, 48.57% never thought that crooked teeth have ill effects, and around 50% of participants were not aware that orthodontic treatment would improve the facial appearance. 47% of participants would not undergo treatment if it took 1-2 years, 53% would not agree for extractions and 42% were not willing to wear retainers.

Conclusion: The knowledge and attitude level on orthodontics can be improved by incorporating the basic aspects of oral health in the syllabus of school education.
Management of Skeletal Class II Malocclusion in Non-Complaint Patient using Powerscope - A Case Report
Authors: Ansari Akram , Jain Abhay Kumar , Singh Ankit , Sharma Priya , Adil Muneeb
Published: April 2020

Class II malocclusion in pubertal phase presents a major and a common challenge to orthodontists. Proper diagnosis and treatment planning in early stage help in preventing and intercepting the severity of malocclusion. In pubertal phase skeletal Class II malocclusion due to mandibular retrusion are best treated with functional appliance. In recent time PowerScope fixed functional appliance is gaining immense popularity as noncompliant Class II corrector. In the present case report an adolescent male patient having Class II division 1 malocclusion with functional jaw retrusion was treated using MBT 0.022” prescription and PowerScope appliance. 7-8 months of PowerScope wear obtained stable and successful results with improvement in facial profile, skeletal jaw relationship and mild increase in IMPA. It can thus be concluded that PowerScope gives good results in Class II correction with a combination of patient comfort and ease of use that was unmatched among other appliances
Correction of Anterior Vertical Dysplasia by using Tongue Crib Therapy in An Adult Patient -A Case Report
Authors: Mishra Kratika , Bhardwaj Amit
Published: April 2020

A female patient of 26 years reported to the Department of Orthodontics, with a chief complaint of spacing between upper and lower front teeth. Patient has a habit of thumb sucking during night time since last 24 years. On extra oral examination she has mesoprosopic facial form, competent lips, bilaterally asymmetric face, convex profile, acute nasolabial angle, high clinical FMA. Intra oral examination reveals anterior open bite with Angle’s Class I molar relation and class I canine relation, proclined upper and lower anterior teeth slightly crowded. Cephalometrically skeletal class II malocclusion, vertical growth pattern with bidental proclination with 10 mm openbite. Detailing treatment strategies such as bracket repositioning, occlusal adjustment,and elastics were used
RESPOSTA GERMINATIVA DO FEIJÃO ARIGÓ E MANTEIGUINHA (Vinga unguicula L. Walp) SUBMETIDAS A CONDIÇÕES ESTRESSE SALINO
Authors: Leite Kelly Nascimento , Andrade Yasmin Cavalcante de , Marques Kecy Dhones Monteiro , Melhorança Filho André Luiz , Oliveira Júnior Porfirio Ponciano de , Sousa Geocleber Gomes de
Published: April 2020

Esse trabalho teve o objetivo de avaliar a germinação e crescimento de plântula das sementes crioulas de feijão-caupi, (Vigna unguiculata (L.) Walp), variedades Manteguinha e Arigó, exposta a níveis crescentes de salinidade da região do vale do Juruá, Acre. O experimento foi conduzido em laboratório utilizando 10 tratamentos e quatro repetições distribuídos seguindo um delineamento inteiramente casualizado em esquema fatorial 2 x 5, duas variedades de feijão (Arigó e Manteguinha) e 5 níveis de salinidade, por um período total de 7 dias. Foi avaliado o índice de germinação, o tempo médio de germinação, crescimento do hipocótilo, crescimento da radícula, e matéria seca total. Os resultados mostraram que a germinação (IVG), hipocótilo (CH) e raiz (CR) são afetados com o aumento das concentrações salinas. O tempo médio de germinação para a variedade Arigó não sofreu alteração significativa com a presença dos sais na solução. A matéria seca do hipocótilo e raiz foram afetadas de maneira significativa somente para a variedade Arigó. A variedade Manteguinha apresentou boa tolerância à salinidade na germinação inicial, mostrando-se como uma boa alternativa para programas de seleção de obtenção de cultivares tolerantes ao estresse salino.Palavras-chave: feijão-caupi; salinidade; germinação. GERMINATION RESPONSE OF BEAN ARIGÓ AND MANTEGUINHA (Vigna unguiculata (L.) Walp) SUBMITTED TO SALT STRESS CONDITIONS ABSTRACT: The objective of this work was to evaluate the germination and seedling growth of the Creole seeds of the Juruá Valley, Acre, bean caupi (Vigna unguiculata (L.) Walp) varieties Manteguinha and Arigó, exposed to increasing levels of salinity. The experiment was conducted in a laboratory using 10 treatments and four replicates distributed in a completely randomized design in a 2 x 5 factorial scheme, two varieties of bean (Arigó and Manteguinha) and 5 levels of salinity, for a total period of 7 days. The germination index, mean germination time, hypocotyl growth, root growth, and total dry matter were evaluated. The results showed that germination (IVG), hypocotyl (CH) and root (CR) are affected with the increased salt concentrations. The mean germination time for the Arigó variety did not change significantly with the presence of the salts in the solution. The dry matter of the hypocotyl and root is affected only significantly for the arthropod variety. The variety Manteguinha presented good tolerance to the salinity in the initial germination. The butterbean variety stood out best by showing a good alternative for selection programs for obtaining salt tolerant cultivars.Keywords: cowpea beans; salinity; germination.
ИССЛЕДОВАНИЯ И АПРОБАЦИЯ ПРИМЕНЕНИЯ ПОЛИГЕКСАМЕТИЛЕНГУАНИДИНА В КАРТОФЕЛЕВОДСТВЕ
Authors: Нижник Т. Ю.  , Стрикаленко Т. В.  , Баркова Н. П.  , Коваль Н. Д.  , Баранова А. И.
Published: April 2020

Results of the conducted researches and approbation allow to assume that use of water solutions of PНMG reagent can be an effective way of prevention of defeat of Phytophthora infestans D.B po-tatoes., safe for the person, economically and ecologically reasonable, ensuring safety of sowing material and tastes of this foodstuff. Application of 0.10% of water solution of PНMG reagent is proved for processing of leaves of potatoes. Results of researches allow to consider that irrigation of 0.2% the PНMG water solution of tubers of potatoes before their bookmark on storage is in the effective way of prevention of the Phytophthora diseases
POSSIBLE ROLE OF NITRIC OXIDE IN REGULATION OF MICROCIRCULATION IN THE ORAL CAVITY TISSUES OF RAT
Authors: Dekanosidze M.  , Saganelidze Kh.  , Mamaladze M.  , Sakvarelidze N.  , Diasamidze G.  , Mitagvaria N.
Published: April 2020

Possible role of Nitric oxide (NO) in terms formation of basal blood flow level in oral cavity tissue is studied using the method of hydrogen electrochemical generation in anesthetized rats.It was found that NO plays a leading role in oral mucosa and submandibular gland basal blood flow regulation and does not have any significant effect on blood circulation of the lower snout tissue.
ОСОБЕННОСТИ ОБУЧЕНИЯ АУДИРОВАНИЮ ИНОСТРАННЫХ СТУДЕНТОВ-НЕФИЛОЛОГОВ
Authors: Алиева Б. Б.
Published: April 2020

The article "Peculiarities of teaching listening to foreign students non- philologists" studies the problems of listening and its types. When teaching Russian language to foreign non-philology students at the pre- university stage, learning educational listening is significant. Educational listening is a learning tool, the basis for mastering oral speech, the formation and development of communicative listening skills. Considering the different functions of listening in the learning process, goals, nature of information understanding and a foreign student’s state of attention at the time of the hearing, there are various types of educational listening. We consider the levels of listening, audit competence and its components, as well as a special type of monological listening - listening to lectures on specialty.Listening is a complex process causing great difficulties and special attention has been paid to their reasons. Taking into consideration, when teaching foreign non-philology students, given their professional orientation different types of listening should be improved.
ВИЗНАЧЕННЯ ЕКОЛОГІЧНИХ НОРМАТИВІВ ДЛЯ БАСЕЙНУ РІЧКИ УДИ В МЕЖАХ ХАРКІВСЬКОЇ ОБЛАСТІ
Authors: Рибалова О. В.  , Ільїнський О. В.  , Бондаренко О. О.  , Макаров Є. О.  , Жук В. М.
Published: April 2020

The article improves the method of establishing ecological norms of surface water quality in accordance with Ukrainian legislation and the Water Framework Directive of the European Union, which represents the scientific novelty of work. For the first time environmental norms for water flows of the Udy river basin have been determined on the basis of the forecast of their qualitative condition, taking into account the landscape-geographic features of the functioning of aquatic ecosystems. Ranking of the observation posts for the quality status of the Udy River in terms of the ecological index value for the permissible and target ecological standard makes it possible to identify the most polluted watercourses. The improvement of the methodology for establishing ecological norms of surface water quality has a purpose to introduce an iterative approach to the management of surface water quality into the water protection practice of Ukraine and its adaptation to the environmental legislation of the EU countries.
МОРФОЛОГІЧНА ХАРАКТЕРИСТИКА СТРУКТУРНИХ КОМПОНЕНТІВ ХРЯЩОВОГО ПОКРИТТЯ КОЛІННОГО СУГЛОБА НА УЛЬТРАСТРУКТУРНОМУ РІВНІ В НОРМІ
Authors: Войценко К. І.  , Пальтов Є. В.  , Кривко Ю. Я.
Published: April 2020

The work, presented below, aimed at studying the peculiarities of structural organization of the articular cartilage coating of the knee joint in the norm. The objective was achieved by microscopic visualization of cellular components of the articular cartilage. To obtain the microstructural materials we applied generally accepted, conventional methods.The results of the study will allow to form an ultrastructural base that can be further used for a comparative study of the structural components of the articular cartilage in norm as opposed to morphological changes of some elements in different stages of acute, subchronic and chronic experimental opioid exposure.
ДІАГНОСТИКА СИНДРОМУ ОБСТРУКТИВНОГО АПНОЕ / ГІПОПНОЄ В АМБУЛАТОРНІЙ ПРАКТИЦІ
Authors: Івчина Н. А.
Published: April 2020

The syndrome of obstructive sleep apnea/hypopnea is a common disease which is caused by obstruction of the upper respiratory tract. This condition is characterized by repeated pauses in breathing during sleep. It is usually associated with a decrease in blood oxygen saturation. Primary risk factors of obstructive sleep apnea/hypopnoea syndrome — age, being a male and the family anamnesis. To the minor factors contributing to development of obstructive sleep apnea/hypopnoea syndrome, adiposity, abusing alcohol, the smoking, a habitual snore, day drowsiness.The researchers are interested in this problem due to the fact that obstructive sleep apnea/hypopnea syndrome is an adverse consequence of cardiovascular diseases and sudden death. Objective. Determine the prevalence of this disease in the outpatient medical practiceMaterial and methods. Out-patient cardio-respiratory monitoring. Results and discussion. High incidence of disease in outpatient patients.
Cytoreductive Surgery Combined with Hyperthermic Intraperitoneal Intraoperative Chemotherapy (Hipec) for Recurrent Squamous Cell Carcinoma of the Pancreas
Authors: Tentes Antonios-Apostolos , Fotiadou A. , Iliadis A. , Kalakonas A. , Tentes Antonios-Apostolos , Hristakis Ch. , Kyziridis D.
Published: April 2020

Background/Aims: Squamous cell carcinoma of the pancreas is a rare entity and its histogenesis is not
adequately understood. Surgical resection is the only potentially curative option. Recurrent local-regionally
pancreatic carcinomas are usually inoperable and are treated with palliative intent. The purpose of the study
is to present the treatment strategy of a recurrent squamous cell pancreatic carcinoma with peritoneal
carcinomatosis.
Case Report: A 49-year-old man with local-regional recurrent squamous cell pancreatic carcinoma
underwent complete (CC-0) cytoreductive surgery (CRS) and hyperthermic intraoperative intraperitoneal
chemotherapy (HIPEC). In a 6-month time he underwent secondary CRS+HIPEC for regional recurrence.
Despite treatment with adjuvant systemic chemotherapy the patient died 12 months after the initial CRS
with osseous metastases.
Conclusions: A reliable prognosis for recurrent squamous cell pancreatic carcinoma is impossible despite
complete cytoreduction in combination with HIPEC and systemic chemotherapy.
Pinning in pediatric neurosurgery: the modified rubber stopper technique
Authors: LoPresti Melissa A. , Nguyen Joshua , Lam Sandi K.
Published: April 2020

Head immobilization devices with skull pins are commonly used by neurosurgeons to stabilize the head for microsurgical techniques and to maintain accurate intraoperative neuronavigation. Pediatric patients, who may have open fontanelles, unfused sutures, and thin skulls, are vulnerable to complications during placement in pins. We review the various methods of pinning in pediatric neurosurgery and revisit the modified rubber stopper technique using a commonly available rubber stopper from a medication bottle over a standard adult pin of a Mayfield head clamp to prevent the pins from plunging through the thin pediatric skull.
STUDI PENGENALAN INTERNET OF THINGS BAGI GURU DAN SISWA SMK BINA NUSA SLAWI SEBAGAI WAWASAN SALAH SATU CIRI REVOLUSI INDUSTRI 4.0
Authors: Ginanjar Wiro Sasmito
Published: April 2020

Bina Nusa Slawi Vocational School (Binus) is one of the Vocational High Schools located in Slawi District, Tegal Regency. The results of a survey conducted, that almost all teachers and students (99%) had heard about the Industrial Revolution 4.0 and Internet of Things, but did not understand the meaning of it all, even though the industrial revolution 4.0 had disrupted almost all fields of science and lines of life. The survey results also show that all teachers and students have used internet maximally, but development trend of the use internet that is not yet widely understood, especially regarding: Wireless Sensor Network (WSN), Cloud Computing, Big Data, and Artificial Intelligence. Therefore needed an Introduction Study Internet of Things for Teachers and Students of SMK Bina Nusa Slawi as Insights One of the Characteristics of the Industrial Revolution 4.0. The method implemented is by giving presentations, discussions, and demonstrations about Internet of Things, Artificial Intelligence and Big Data. Based on activities that have been carried out, the results obtained are knowledge, understanding, competence of teachers and students of SMK Bina Nusa Slawi about Internet of Things increasing.
METODE PEMBERIAN TUGAS DAPAT MENINGKATKAN PEMAHAMAN SISWA SEKOLAH DASAR
Authors: Sutiah Sutiah
Published: April 2020

Pembelajaran matematika akan berhasil dengan baik apabila guru dapat menentukan metode belajar yang tepat dalam mencapai tujuan pembelajaran. Pemahaman merupakan merupakan salah satu tujuan pembelajaran matematika yang banyak siswa sulit mencapainya. Kondisi ini terjadi pada siswa kelas III SDN Palasah III. Metode pemberian tugas  adalah salah satu metode yang biasa di gunakan oleh guru untuk siswa guna meningkatkan pemahaman siswa. Penulsi tertarik untuk mencoba menerapkan metode pemberian tugas sebagai solusi atas rendahnya pemehaman matematika siswa. Tujuan penelitian ini adalah untuk meningkatkan pemahaman matematis siswa dengan menggunakan pemberian tugas. Penelitian ini menggunakan metode penelitian tindakan kelas dan dilaksanakan dalam tiga siklus. Subyek penelitian adalah siswa kelas III SDN Palasah III yang berjumlah siswa 33 orang yang terdiri dari 20 siswa laki-laki dan 13 siswa perempuan. Berdasarkan hasil penelitian diperoleh kesimpulan pemahaman matematika siswa meningkat dengan menggunakan metode pemberian tugas.
PENANAMAN KESADARAN HIDUP SEHAT SISWA YANG TERDAMPAK OLEH POLUSI PLTU CILACAP MELALUI PROGRAM ADIWIYATA
Authors: Dewi Roisna , Harmianto Sri , Andriani Ana
Published: April 2020

PLTU Cilacap merupakan Pembangkit Listrik Tenaga Uap yang terletak di Jalan Lingkar Timur Desa Karangkandri Kabupaten Cilacap. PLTU Cilacap memberikan dampak yang berpengaruh terhadap  kesehatan, sosial dan sistem ekonomi masyarakat. Penelitian ini membahas mengenai dampak yang dirasakan oleh masyarakat sekitar, terutama SDN 3 Karangkandri. SDN 3 Karangkandri melakukan kegiatan penanaman kesadaran hidup sehat pada siswa yang terdampak oleh polusi PLTU Cilacap melalui program adiwiyata. Penelitian ini merupakan penelitian kualitatif dengan metode deskriptif yang menjelaskan tentang cara penanaman kesadaran hidup sehat pada siswa yang diakibatkan oleh dampak PLTU. SDN 3 Karangkandri merasakan dampak negatif yang disebabkan oleh PLTU Cilacap, baik dalam proses pembelajaran, lingkungan sekolah maupun kesehatan warga sekolah. SDN 3 Karangkandri mengadakan kegiatan penanaman kesadaran hidup sehat pada siswa yang terdampak oleh polusi PLTU Cilacap melalui program adiwiyata. Program tersebut diadakan oleh sekolah untuk membantu menanggulangi dampak dari PLTU Cilacap. Program adiwiyata juga mendapat bantuan dari pihak PLTU dan masyarakat sekitar. Program adiwiyata yang dilakukan oleh sekolah seperti Pendidikan Lingkungan Hidup (PLH), K7, pembuatan taman sekolah dan pembelajaran berbasis kurikulum. Kegiatan-kegiatan rutin yang dilakukan untuk menanamkan kesadaran hidup sehat pada siswa seperti kebersihan, penanaman pohon dan pemeliharaan tumbuhan di sekitar sekolah.
IMPLEMENTASI MODEL PEMBELAJARAN PREDICT-OBSERVE-EXPLAIN (POE) DALAM MENINGKATKAN KEMAMPUAN PENALARAN MATEMATIS SISWA SEKOLAH DASAR
Authors: Nuraeni Nina
Published: April 2020

Penelitian ini dilatarbelakangi oleh kurangnya kemampuan penalaran matematis siswa kelas V SDN Anggrawati I. Penelitian  ini  merupakan  penelitian tindakan kelas yang dilaksanakan secara kolaboratif oleh guru dan peneliti. Tindakan penelitian dilaksanakan dalam dua siklus, masing-masing siklus terdiri dari dua tindakan. Subjek penelitian ini adalah siswa kelas V SDN Anggrawati 1, sebanyak 19 orang siswa terdiri dari 13 siswa laki-laki dan 6 siswa perempuan. Alat pengumpul data yang digunakan dalam pengumpulan data adalah tes berupa lembar soal tes kemampuan penalaran matematis, lembar observasi berupa lembar observasi kegiatan siswa dan lembar observasi kinerja guru serta dokumentasi berupa foto kegiatan pelaksanaan pembelajaran. Data yang diperoleh berupa hasil tes, hasil observasi dan dokumentasi. Teknik analisis data yang digunakan adalah analisis deskriptif kuantitatif untuk menganalisis hasil tes akhir setiap siklus dan analisis deskriptif kualitatif untuk hasil observasi setiap siklus.  Hasil penelitian menunjukkan bahwa pelaksanaan pembelajaran dengan penerapan model pembelajaran Predict-Observe-Explain (POE) dapat meningkatkan kemampuan penalaran matematis siswa kelas V SDN Anggrawati I. Hal ini ditunjukan dengan adanya peningkatan dari sebelum pemberian tindakan hingga siklus II. Maka dengan demikian dapat disimpulkan bahwa penerapan model pembelajaran Predict-Observe-Explain (POE) dapat meningkatkan kemampuan penalaran matematis siswa kelas V di SDN Anggrawati I.
UPAYA GURU DALAM MENINGKATKAN KEMAMPUAN MOTORIK HALUS PESERTA DIDIK MELALUI KEGIATAN MEWARNAI
Authors: Suidah Ida
Published: April 2020

Penelitian ini bertujuan untuk mengetahui upaya guru dalam meningkatkan kemampuan motorik halus peserta didik melalui kegiatan mewarnai di TK Pembina Kecamatan Dawuan Kabupaten Majalengka. Kemampuan motorik halus sangat penting untuk mendukung jenjang pendidikan selanjutnya. Penelitian ini Penelitian Tindakan Sekolah yang dilaksanakan dalam 2 siklus. Subjek penelitian ini adalah TK Pembina Kecamatan Dawuan Kabupaten Majalengka berjumlah 36 anak dengan objek kemampuan motorik halus. Teknik pengumpulan data yang digunakan adalah observasi dan dokumentasi. Analisis data menggunakan deskriptif kualitatif dan kuantitatif. Hasil observasi kemampuan motorik halus sebelum tindakan rata-rata persentase sebesar 64,58% dengan kriteria BSH, mengalami peningkatan sebesar 3,65% pada siklus I berada pada kriteria BSH, pada siklus II mengalami peningkatan sebesar 11,72% menjadi Berkembang Sangat Baik. Berdasarkan data tersebut dapat disimpulkan bahwa kemampuan motorik halus anak mengalami peningkatan dan mencapai indikator keberhasilan lebih dari 75% dengan kriteria Berkembang Sangat Baik. Keberhasilan tersebut tidak terlepas dari langkah-langkah pembelajaran yaitu: (1) Satu kelas dibagi menjadi 3 kelompok terdiri dari 4-5 anak (2) Tiap kelompok mendapatkan 4-5 macam pewarna yang sudah diletakkan dalam wadah (3) Guru memberikan contoh kegiatan mewarnai yang akan dilakukan (4) Menyampaikan aturan yang telah disepakati selama kegiatan mewarnai dan (5) Gambar yang diwarnai disesuaikan dengan tema yang sedang berlangsung di TK.
Integrated GNSS antenna with an embedded inertial measurement unit
Authors: Vasilyuk Nikolay N.
Published: April 2020

When constructing inertial/GNSS navigation systems, it is necessary to determine coordinates of a GNSS antenna relative to an inertial measurement unit. It is proposed to solve this problem by integrating of the inertial unit and GNSS antenna’s element into a common structure called an integrated antenna. This approach allows to determine the required coordinates in factory conditions, during a manufacturing of the integrated antenna. Operation principles of design modules of the integrated antenna and ways to use this antenna in the inertial/GNSS navigation systems have been described. Design features of a half-duplex digital data exchange between the antenna and a data processor have been indicated. Approaches to use this exchange to solve some service tasks of the navigation system have been proposed. It is noted that the integrated antenna has its own measuring basis. Methods of accounting of the attitude of this basis in practical applications of the integrated antennas in the single- and multi-antenna inertial/GNSS navigation systems have been described.
About definition of the local entropy rate of production in experiment of pulse electric heating
Authors: Kostanovskiy Alexandr V. , Kostanovskaya Margarita E.
Published: April 2020

Work is devoted to studying of a linear mode thermodynamic – a mode which is actively investigated now. One of the main concepts of a linear mode – local entropy rate of production. The purpose of given article consists in expansion of a circle of problems for which it is possible to calculate a local entropy rate of production, namely its definition, using the experimental “time-temperature” curves of heating/cooling. “Time-temperature” curves heating or cooling are widely used in non-stationary thermophysical experiments at studying properties of substances and materials: phase transitions of the first and second sort, a thermal capacity, thermal diffusivity. The quantitative substantiation of the formula for calculation of the local entropy rate of production in which it is used thermogram (change of temperature from time) which is received by a method of pulse electric heating is resulted. Initial time dependences of electric capacity and temperature are measured on the sample of niobium in a microsecond range simultaneously. Conformity of two dependences of the local entropy rate of production from time is shown: one is calculated under the known formula in which the brought electric capacity is used; another is calculated, using the thermogram.
Analysis of significant measures for thermal conductivity
Authors: Zarichnyak Yuri P. , Khodunkov Vyacheslav P.
Published: April 2020

The analysis of a new class of measuring instrument for heat quantities based on the use of multi-valued measures of heat conductivity of solids. For example, measuring thermal conductivity of solids shown the fallacy of the proposed approach and the illegality of the use of the principle of ambiguity to intensive thermal quantities. As a proof of the error of the approach, the relations for the thermal conductivities of the component elements of a heat pump that implements a multi-valued measure of thermal conductivity are given, and the limiting cases are considered. In two ways, it is established that the thermal conductivity of the specified measure does not depend on the value of the supplied heat flow. It is shown that the declared accuracy of the thermal conductivity measurement method does not correspond to the actual achievable accuracy values and the standard for the unit of surface heat flux density GET 172-2016. The estimation of the currently achievable accuracy of measuring the thermal conductivity of solids is given. The directions of further research and possible solutions to the problem are given.
A Study Interfrequency Onboard Delays of Signals Navigation Satellites GLONASS
Authors: Karaush Ekaterina A. , Pecheritsa Dmitry S.
Published: April 2020

The problem of interfrequency signal delays estimation of GLONASS system navigation satellite is considered Such delays in the radio-frequency massage of navigation satellites are the source of the instrumental error of pseudorange measurements. The estimation method of interfrequency signal delays is proposed, based on the calculation of first differences of pseudorange measurements on navigation satellites, the relative position of which differs by no more than 1°. The experiment on estimation of inter-frequency delays signal on the basis of the developed method was conducted. The experiment is based on the use of calibrated navigation receiver to separate errors caused by signal delays in the receiver and navigation satellite. Also, to minimize the effects of the Earth's ionosphere layer navigation signal delay, only those measurements taken at a low Total Electronic Concentration TEC are included in the processing. Pseudorange measurements using GLONASS and GPS navigation satellites signals were used as the main source data. The results of the estimation for all GLONASS orbital group satellites were compared with the form values provided in the navigation massage. The results of experimental research have been analyzed and the values of standard deviation of GLONASS orbital group delays have been obtained. To confirm the adequacy of the results was checked for internal convergence of the results and determined the error of the developed method for assessing the interfrequency delays of navigation spacecraft.
Microwave resonance method for measuring microliter volumes of free moisture in aviation fuels
Authors: Volkov Vitaly V. , Suslin Michael A. , Dumbolov Jamil U.
Published: April 2020

One of the conditions for ensuring the safety of air transport operation is the quality of aviation fuel refueled in aircraft. Fuel quality control is a multi-parameter task that includes monitoring the free moisture content. Regulatory documents establish the content of free water no more than 0.0015% by weight. It is developed a direct electrometric microwave resonance method for controlling free moisture in aviation fuels, which consists in changing the shape of the water drops by pressing them on a solid surface inside a cylindrical cavity resonator. This can dramatically increase dielectric losses. Analytical and experimental analysis of the proposed method is carried out. The control range from 0,5 to 30 μl of absolute volume of moisture in aviation fuels with a maximum error of not morethan 25 % is justified. The sensitivity of the proposed method for monitoring microwave losses in free moisture drops transformed into a thin layer by pressing is an order of magnitude greater than the sensitivity of the method for monitoring microwave losses in moisture drops on a solid surface in a resonator. The proposed method can be used as a basis for the development of devices for monitoring the free moisture of aviation fuels in the conditions of the airfield and laboratory. The direction of development of the method is shown.
新时期水闸的维护与管理方法探究
Authors: 任 培强
Published: April 2020

水利工程建设对地区经济发展有着十分显著的影响。水闸是重要的水利设施,水闸维护和管理也成为了水利工程建设中极为关键的内容,但是我国水闸维护和管理工作相对滞后,为此,就需采取有效的控制和优化措施,做好水闸的管护工作。
全寿命周期造价管理在电力工程造价管理中的应用
Authors: 陈 金苗
Published: April 2020

随着我国经济的持续发展,电力工业取得了很大的进步,但同时,对电力的需求也急剧上升。以往的供电能力已不能适应当前社会对电力的需求,电力工程建设规模日益扩大。电力工业的建设是一个资本积累的过程。在具体建设过程中,电力企业要做好工程造价管理和控制,提高资金利用率,提高各项建设项目的经济效益,促进我国经济向更加稳定的方向发展。
谈水利工程建设与运行管理-以某工程为例
Authors: 代 芝元
Published: April 2020

水利工程作为一项和群众生产生活紧密联系的工程项目,在近年来群众生活质量和水平全面提升背景下,已经越来越受到了人们的关注和重视。水利工程的建设不仅能有效预防洪涝灾害,同时对于水资源的合理调配也将起到重要影响,是社会效益和经济效益提升的重要手段。我国始终将水利工程建设作为国家建设工作的主要项目,但是在实际研究中发现,目前我国水利工程建设与运行管理仍然存在不完善的情况,为此本文将以某工程为例对这项工作进行细致研究。
水环境监测信息化新技术的应用
Authors: 马 莹
Published: April 2020

当前,环保理念在社会发展中发挥着重要的作用,水环境监测工作是生态文明得以实施的重要表现。随着时代的发展,该工作也面临着诸多的挑战,而信息技术的应用则有利于环境保护工作的顺利开展,提高水环境监测的效率。本文就将分析水环境监测信息化新技术的应用,以供借鉴。
风电场智能运维管控系统方案研究
Authors: 杨 杰
Published: April 2020

本文主要对大数据发展背景下风电场智能运维管控系统方法的设计进行分析,从软件的基本架构、拓扑架构以及其自身所涉及到的其他专业技术内容入手进行研究。首先,立足于软件架构中的数据、平台以及业务三个方面的相关业务、基本方法和要求进行重点阐述,其次介绍风场侧、运维中心以及远程终端三个方面的相关内容,最后,研究实现该方法所需要具备的专业技术,希望能够进一步提高风电场智能运维管控系统方法的运用质量与效果。
分析我国现代水电厂运行管理模式
Authors: 张 磊
Published: April 2020

随着我国社会经济的发展,我国的水电厂建设也越来越完善,其在院校管理工作中,也逐渐的开始采取现代化的运行管理模式,文章就我国水电厂发展现状、水电厂运行管理中的问题以及我国现代水电厂运行管理模式和提高水电厂运行管理水平的措施进行了分析。
浅析水利工程建设质量监督管理
Authors: 吐尔逊 萨塔尔 •
Published: April 2020

众所周知,水利工程建设为社会经济发展注入了强力支撑,因此加强工程建设质量监督管理具有十分重要的意义。近年来,为推动社会经济结构的调整与改革,水利工程建设成为政府投资发展的重要侧重点。然而当前水利工程建设质量监督管理仍存在一些问题与不足,需要加以完善和优化。本文就水利工程建设质量监督管理进行全面探讨和研究,希望推动我县水利工程建设质量的全面提升。
碾压混凝土碾压监测系统及质量控制研究
Authors: 王 程鹏
Published: April 2020

丰满大坝(重建)工程中的大坝主体工程混凝土浇筑于2015年4月份开始施工,采用全断面碾压混凝土进行浇筑,本文论述了一些关于碾压混凝土施工过程中的技术要求和质量把控点以及如何正确全面的利用碾压监测系统。
电厂汽机热力系统运行优化策略分析
Authors: 石 卫
Published: April 2020

随着我国经济的快速发展,能源消耗量不断的增加,电厂为了实现利益最大化,对热电厂系统不断的改造与优化调度。汽机的工作环境较为特殊,所以对热力系统本身的能效也有着严格的要求。本文重点研究了电厂汽机热力系统的运行优化问题,从而有效提升了电厂汽机的工作效率。
农业水利工程节水型灌溉系统建设
Authors: 杨 利华
Published: April 2020

水利工程为推动国家经济发展做出了突出贡献,有效的缓解了农业水利灌溉工程的水资源调度问题,提高了农作物的成活率,也为促进农业经济增长提供极大便利。水利节水灌溉工程建设是推动农业发展的重要途径,不但可以实现增产增收的目标,还能够推动社会主义新农村的建设速度。本文首先介绍水利工程节水灌溉技术的概念,之后分析具体的节水措施,通过实际的案例分析,为强化节水型水利工程建设提供科学依据。
水利工程施工期生态环境保护措施研究
Authors: 张 晓原
Published: April 2020

水利工程与群众的日常生活息息相关,同时也对国家的经济发展起着积极作用。但在水利工程施工中,不可避免的会对周边的生态环境造成破坏。本文就水利工程施工期的生态环境保护措施进行了研究,并就其中存在的问题提出了整改措施。
关于我国农田水利节水灌溉工程的设计方面的思考
Authors: 郭 云爽
Published: April 2020

新时期下,我国农村经济的发展水平越来越高,高效的节水技术也逐渐被应用到了农田水利节水灌溉工程中,在很大程度上也促进了我国农田水利的节水发展。文章就我国农田水利节水灌溉工程的设计工作现状以及强化措施方面进行了分析。
浅谈水利工程建设合同管理
Authors: 杨 永强
Published: April 2020

合同是合作双方的保障,也是活动开展的基础要素。在水利工程建设中,合同则是实行行为规范,各参建方关系维护的重要纽带,做好合同管理,对于水利工程项目的顺利开展有着推动作用。文章就对水利工程建设合同管理进行分析探讨,希望对相关从业人员有所帮助。
O Mosaico Inflamatório nos Subtipos de Carcinoma Basocelular
Authors: Ramos Machado Braga Jacqueline , Sadigursky Moysés , De Almeida Barbosa Junior Aryon
Published: April 2020

Introdução: O carcinoma basocelular (CBC) e definido como um tumor localmente invasivo e de progressão lenta. A medida que ele se espalha, inicia-se um processo inflamatório crônico com recrutamento de diversos tipos celulares. Objetivo: Caracterizar o infiltrado inflamatório, nos diferentes subtipos de CBC, através da identificação e quantificação de suas células. Método: Foi realizado estudo retrospectivo de 71 blocos de parafina de pacientes diagnosticados com CBC não recorrente. As analises imuno-histoquímicas foram realizadas pela técnica de estreptoavidina-biotinaperoxidase (CD3, CD20, CD68, CD8, CD4, Ki-67 e MAST cell), além da técnica do azul de toluidina para mastócitos. Resultados: Os subtipos mais frequentes foram o infiltrativo (26%) e o superficial (23%). Na composição do infiltrado inflamatório, os linfócitos TCD 4+ corresponderam a população mais numerosa (216,2 ± 22,23), seguida por mastócitos (111,0 ± 7,88), linfócitos TCD 8+ (57,38 ± 5,94), linfócitos B (55,9 ± 6,83) e macrófagos (21,18 ± 2,58). Houve uma baixa atividade proliferativa celular total (47,61 ± 7,48), no entanto em formas mais agressivas esse dado foi inverso e com infiltrado rico em mastócitos. O subtipo adenoide apresentou o mais denso infiltrado, enquanto o cístico apresentou o mais discreto. Observou-se relação inversa entre o número de mastócitos e de linfócitos T, sem correlação com agressividade. Conclusão: No CBC, o infiltrado inflamatório peritumoral sugere uma resposta imunológica mediada por células TCD 4+ e composição variando de acordo com o tipo de tumor. Sugere-se que as características de cada tumor possam promover diferenças no microambiente tecidual, induzindo alterações na composição do infiltrado que poderiam tanto auxiliar quanto impedir o crescimento tumoral.
Fundamentos teórico-filosóficos e suas determinações nas teorias pedagógicas da educação escolar
Authors: Martins Lígia Márcia , Lavoura Tiago Nicola
Published: April 2020

Realçando a relação existente entre filosofia e educação, o texto de natureza teórico-conceitual pretendeu abordar os principais fundamentos teórico-filosóficos os quais carregam determinações para o trabalho educativo na educação escolar. Para dar cabo a tal desenvolvimento, realizou-se um primeiro procedimento analítico-expositivo dos traços essenciais das ideias de alguns dos filósofos clássicos da modernidade para, subsequentemente, apresentar suas expressões na educação escolar, a partir de um procedimento de síntese considerando os seguintes critérios: relação sujeito-objeto; concepção de conhecimento; formulação do conhecimento; percurso lógico adotado; primados; expressões pedagógicas e eixos no processo educativo. Com os resultados apresentados, espera-se ter uma efetiva contribuição em termos de reflexão filosófica que se impõe como fundamento nuclear do trabalho pedagógico.
A decadência ideológica da burguesia e a desvalorização da produção científica nacional
Authors: Carvalho Saulo Rodrigues
Published: April 2020

Este artigo analisa os aspectos da decadência ideológica da burguesia e sua relação com a desvalorização da produção científica. Parte do pressuposto que o aprofundamento da crise de lucratividade impulsiona o irracionalismo, suas respostas ilusórias e embrutecedoras na retomada dos níveis máximos de exploração. De tal modo, a apologética ao sistema capitalista favorece ao fortalecimento de pseudociências mistificadoras e legitimadoras da forma capital. Num segundo momento, coteja os aspectos da decadência ideológica presentes na formulação do programa “Future-se”, proposto pelo MEC. Os imperativos ideológicos do empreendedorismo conduzem a produção da pesquisa nacional, para a reorganização das suas práticas científicas orientadas e limitadas pelo preceito da rentabilidade do mercado.
Ciências e educação escolar em tempos de obscurantismo
Authors: Morschbacher Márcia
Published: April 2020

Este trabalho bibliográfico analisa a relação entre ciência e educação escolar, tendo em conta a atual conjuntura de acirramento da contradição entre as forças produtivas e as relações de produção e da luta de classes, assim como de recrudescimento do obscurantismo. Aborda a desqualificação da formação dos trabalhadores como expressão da tendência ao rebaixamento ao custo da força de trabalho e como esta se articula ao projeto obscurantista de educação que se institucionaliza no país. Ainda, analisa a relação entre ciência, formação humana e educação escolar. Conclui que o interdito ao acesso ao conhecimento nas suas formas mais elaboradas, em especial, a ciência, responde aos interesses hegemônicos de manutenção da ordem vigente e que a defesa da ciência, da educação escolar e da escola coloca-se como uma agenda fundamental no enfrentamento ao obscurantismo nas suas diversas expressões.
In vitro Regeneration of Ginger (Zingiber officinale Roscoe)
Authors: Sumon M. Naimur Rahman , Banu Tanjina Akhtar , Mollika Sanjida Rahman , Goswami Barna , Islam Mousona , Akter Shahina , Sharmin Ripa Akter , Khan M. Salim
Published: April 2020

An efficient and reproducible in vitro regeneration protocol was established for two varieties of ginger (Z. officinale Roscoe) namely, BARI Ada-1 and Chinese ginger accession number SG876). In case of BARI Ada-1 best result was obtained on MS supplemented with 2.0 mg/l BAP, 0.5 mg/l Kn and 0.5 mg/l NAA. In this combination, 95% rhizome bud explants responded within 6 - 8 days and mean number of shoots per explant was 8.79 ± 0.42. On the other hand, Chinese ginger showed best (90%) shoot regeneration response from the same explants on the same medium and hormonal combinations but in exchange of 0.25 mg/l NAA. In this hormonal composition shoot initiation started within 7 - 8 days of culture and mean number of shoots/explant was 6.83 ± 0.71 after 24 - 27 days of culture. Maximum root induction (90 and 80%) was found on MS supplemented with 0.5 mg/l IBA and 0.5 mg/l NAA in case of BARI Ada-1 and Chinese ginger, respectively. The in vitro regenerated plantlets were successfully transplanted into the soil after acclimatization.
In Planta Genetic Transformation of Mungbean (Vigna radiata (L.) Wilczek) with Marker Gene
Authors: Hasan Mohammad Mahmood , Bhajan Sujay Kumar , Hoque M. Imdadul , Sarker R.H. , Islam Mohammad Nurul
Published: April 2020

In genetic improvement of mungbean much success has not been achieved due to its recalcitrant nature towards in vitro regeneration. An attempt was made to develop an Agrobacterium-mediated in planta genetic transformation protocol for a locally grown mungbean variety BARI Mung-3 using a screenable marker gene. Two minutes of vacuum infiltration followed by 60 minutes of incubation period in Agrobacterium suspension of Winans’ AB medium containing wounded tobacco leaf extract was found most suitable towards genetic transformation in pricked de-coated half seed explants. An optical density (OD600) of 0.7 was found most effective for transient gus gene expression. Chimeric GUS expression was observed in the root and leaf tissues from the successfully transformed plantlets obtained through in planta transformation. This methodology of genetic transformation was found more suitable, easier and less time consuming than tissue culture based genetic transformation, which may be used for the genetic improvement of mungbean.
Dual Phase Regeneration System for Mass Propagation of Cymbidium aloifolium (L.) Sw.: A High Value Medicinal Orchid
Authors: Hossain Mohammad Musharof , Sharma Madhu
Published: April 2020

Efficient micropropagation protocol was established in Cymbidium aloifolium through induction of secondary (2°) protocorms from primary (1°) protocorms, shoot buds (SBs) and protocorm-like bodies (PLBs) from pseudo-stem segments of in vitro raised seedlings. Neo-formation of 2° protocorms from 1° protocorms was obtained in liquid and agar-solidified Phytamax (PM) medium with NAA, 2,4-D, BAP and Kn at different concentrations and combinations. The highest number of 2° protocorms was induced in liquid PM medium (9.76 ± 0.88/1° protocorm) amended with 2.0 mg/l BAP + 1.0 mg/l 2,4- D. Although protocorms proliferated profusely in liquid medium, hyperhydricity was observed after prolonged culture. Both SBs and PLBs were induced from pseudo-stem segments on agar gelled PM medium and the mode of differentiation was dependent upon specific PGRs concentrations. The maximum number of SBs (5.80 ± 2.59/explant) was recorded in BAP and NAA at 1.0 mg/l each, while the maximum number of PLBs (7.20 ± 3.22/explant) were induced in 2.0 mg/l BAP and NAA each. Well developed root systems were induced SBs and PLBs on transferring to half-strength PM medium fortified with 0.5 mg/l IAA. The rooted plantlets were transferred to the greenhouse with 95% survival.
Arterial Stiffening Contributes to Impairment of Cerebrovascular Reactivity in Patients With Coronary Artery Disease Without Carotid Stenosis
Authors: RUCKA D. , MAREK J. , RUCKLOVA Z. , LUBANDA J.-C. , HAVRANEK S. , SKVARIL J. , VAREJKA P. , CHOCHOLA M. , KARETOVA D. , KORINEK J. , LINHART A.
Published: April 2020

Impaired cerebrovascular reactivity (CVR), an important risk factor for future stroke, is affected by a presence carotid stenosis. However, in some cases CVR can be impaired in the absence of carotid stenosis due to several poorly characterized mechanisms. We hypothesized that arterial stiffening as observed in coronary heart disease (CHD) could be associated with alteration in CVR in CHD patients without carotid stenosis. The study population consisted of patients referred for coronary angiography without significant carotid stenosis (<50 %). CVR was evaluated by breath holding index (BHI) measured with transcranial color code duplex ultrasound. Arterial stiffness was assessed by pulse wave velocity (PWV) measured by the oscillometric method. The extent of coronary atherosclerosis was quantified by Gensini score (GS). Out of 186 subjects, sixty-two patients fulfilled the inclusion and exclusion criteria. BHI decreased with increasing PWV (r = –0.47, p<0.001). Decrease in BHI was significantly inversely associated with GS (r = –0.61, p<0.001). GS was associated with PWV (p<0.001). In conclusion, impaired CVR was associated with increased arterial stiffening in CHD patients in the absence of significant carotid stenosis. Thus, we speculate that increased arterial stiffness may at least partially contribute to the pathophysiology of CVR alteration in coronary artery disease.
The Relationships Between Quantitative MR Parameters in Hippocampus in Healthy Subjects and Patients With Temporal Lobe Epilepsy
Authors: WAGNEROVÁ D. , HERYNEK V. , DEZORTOVÁ M. , MARUSIČ P. , KRŠEK P. , ZÁMEČNÍK J. , JÍRŮ F. , ŠKOCH A. , HÁJEK M.
Published: April 2020

We introduce a new magnetic resonance (MR) method based on a pixel-by-pixel image processing to examine relationships between metabolic and structural processes in the pathologic hippocampus. The method was tested for lateralization of the epileptogenic zone in patients with temporal lobe epilepsy (TLE). Twenty patients with drug-resistant TLE and fifteen healthy controls were examined at 3T. The measurement protocol contained T2-weighted MR images, spectroscopic imaging, diffusion tensor imaging and T2 relaxometry. Correlations between quantitative MR parameters were calculated on a pixel-by-pixel basis using the CORIMA program which enables automated pixel identification in the normal tissue according to control data. All MR parameters changed in the anteroposterior direction in the hippocampus and correlation patterns and their slopes differed between patients and controls. Combinations of T2 relaxation times with metabolite values represent the best biomarkers of the epileptogenic zone. Correlations with mean diffusivity did not provide sufficiently accurate results due to diffusion image distortions. Quantitative MR analysis non-invasively provides a detailed description of hippocampal pathology and may represent complementary tool to the standard clinical protocol. However, the automated processing should be carefully monitored in order to avoid possible errors caused by MR artifacts.
An Enhanced cAMP Pathway Is Responsible for the Colonic Hyper-Secretory Response to 5-HT in Acute Stress Rats
Authors: LI Y. , LI L. S. , ZHANG X. L. , ZHANG Y. , XU J. D. , ZHU J. X.
Published: April 2020

5-hydroxytryptamine (5-HT) is involved in the stress-induced alteration of colonic functions, specifically motility and secretion, but its precise mechanisms of regulation remain unclear. In the present study, we have investigated the effects of 5-HT on rat colonic mucosal secretion after acute water immersion restraint stress, as well as the underlying mechanism of this phenomenon, using short circuit current recording (ISC), real-time polymerase chain reaction, Western blot analysis, and enzyme-linked immunosorbance assays. After 2 h of water immersion restraint stress, the baseline ISC and 5-HT-induced ISC responses of the colonic mucosa were significantly increased. Pretreatment with selective 5-HT4 receptor antagonist, SB204070, inhibited the 5-HT-induced colonic ISC response by 96 % in normal rats and 91.2 % in acute-stress rats. However, pretreatment with the selective antagonist of 5-HT3 receptor, MDL72222 or Y-25130, had no obvious effect on 5-HT-induced ISC responses under either set of conditions. Total protein expression of both the mucosal 5-HT3 receptors and the 5-HT4 receptors underwent no significant changes following acute stress. Both colonic basal cAMP levels and foskolin-induced ISC responses were significantly enhanced in acute stress rats. 5-HT significantly enhanced the intracellular cAMP level via 5-HT4 receptors in the colonic mucosa from both control and stressed animals, and 5-HT-induced cAMP increase in stressed rats was not more than that in control rats. Taken together, the present results indicate that acute water immersion restraint stress enhances colonic secretory responses to 5-HT in rats, a process in which increased cellular cAMP accumulation is involved.