bluuebunny/crossref_metadata_2025 huggingface dataset:
МОДЕЛИРОВАНИЕ ДИНАМИКИ ПРОЦЕССА ФРЕЗЕРОВАНИЯ ВО ВРЕМЕННОЙ ОБЛАСТИ
Authors: Эгамбердиев И.П. , Очилов У.Ю. , Мамадияров А.Ж. , Хамроев Н.Н.
Published: July 2023

В этой статье проводится модель процесса фрезерования во временной области для обеспечения реалистичной моделью процесса резания и нестабильности вибрации, поскольку количество допущений сведено к минимуму. Модель фрезерования Simulink была разработана на основе концепции диаграммы петли вибрации. Программа основной модели написана на языке программирования C, который может быть сопряжен с программным обеспечением Matlab/Simulink. Комплексное моделирование во временной области может предсказать изменение вибрации во время процесса обработки. Нелинейное поведение, такое как потеря контакта и демпфирование процесса, может быть легко учтено. Это дает более полное представление о динамике операции фрезерования.
ELEKTR MOTORLARNING TEXNIK HOLATINI DIAGNOSTIKA QILISHNING MAVJUD USULLARINI TAHLIL QILISH HAMDA ULARNI RIVOJLANTIRISH ISTIQBOLLARI
Authors: Qarshibayev A.I. , Narzullayev B.Sh.
Published: July 2023

Ushbu maqolada sa’noat korxonalaridagi elektr texnologik qurilmalarning ishchi mexanizmlarini harakatga keltiruvchi katta quvvatli sinxron motorlarning texnik holatini diagnostika qilishning mavjud usullari taxlil qilingan hamda ularni rivojlantirish istiqbollari ko‘rib chiqilgan. Bugungi kunda elektr motorlarning texnik holatini diagnostika qilish usullarini takomillashtirish ularning rivojlantirish istiqbollari uchun tizim ishlab chiqish ayni vaqtda Respublikamiz sanoat va konchilik korxonalaridagi elektr texnologik qurilmalarning ishchi mexanizmlarini harakatga keltiruvchi katta quvvatli sinxron motorlarning ish jarayonida sodir bo‘ladigan muammolarning yechimi uchun dolzarb hisoblanadi. Shuningdek elektr motorlarning ishlash sikli davomida ularning o‘tkinchi jarayonlari asosida hamda mexanik qismlari bilan bog‘liq bo‘lgan diagnostika qilish usullari taxlil qilinib,mavjud usullarni rivojlantirish maqsadida bir nechta takliflar berilgan. Natijada elektr motorlarning ish jarayonlarini muntazam ravishda nazorat qilib, texnik holatini keng diapazonda yangi zamonaviy qurilmalardan foydalangan holda diagnostika qilish kerakligi asoslab berilgan.
ЗАКОНОМЕРНОСТИ И ФАКТОРЫ ФОРМИРОВАНИЯ ЗОЛОТОГО ОРУДЕНЕНИЯ В ТАМДЫТАУ-БЕЛЬТАУСКОМ РУДНОМ РАЙОНЕ
Authors: Фатхуллаева З.М. , Арипова М.К. , Усманова Ш.В.
Published: July 2023

В данной статье рассматриваются результаты изучения геолого-структурной позиции золоторудных месторождений Тамдытау-Бельтауского рудного поля. Установлено, что все месторождения и их представители расположены в зонах пересечения, соединения и усложнения их морфологии северо-восточных, северо-западных разломов. Что основано на анализе изучения закономерностей формирования и размещения золотых приисков региона, материалов геологоразведочных и тектонофизических исследований, сопоставлении выделенных геолого-структурных позиций с картографическими материалами. В Тамдытау-Бельтау проявления золота формировались под влиянием широкого спектра разрывных структур и элементов их сочетаний. Установленные структурные позиции показывают, что их формирования связаны с морфогенетическими особенностями разломов, их активностью в процессах рудообразования, взаимоотношением между собой.
SANOAT KORXANASI ELEKTR TAʹMINOTI TIZIMINING KOMPLEKS TEXNIK – IQTISODIY MODELINI QURISH
Authors: Taslimov A.D. , Raximov F.M. , Meliqoʹziev M.V. , Yuldashev A.A.
Published: July 2023

Maqolada sanoat korxonasi elektr ta’minoti tizimi elementlarining, jumladan tashqi elektr ta’minoti liniyalari, transformator podstansiyalari, ta’minlovchi va taqsimlovchi liniyalarining, matematik modellari asosida uning umumiy xarajatlarining kompleks texnik- iqtisodiy modeli ishlab chiqiladi. Ushbu model sanoat korxonalari elektr ta’minoti tizimi parametrlarini kompleks optimallashtirish va ularning maqsadga muvofiq qiymatlarini aniqlash imkonini beradi.
СОВЕРШЕНСТВОВАНИЕ РЕГИОНАЛЬНОГО ЭКОЛОГО- ЭКОНОМИЧЕСКОГО МЕХАНИЗМА ПРИРОДОПОЛЬЗОВАНИЯ ДЛЯ ОБЕСПЕЧЕНИЯ УСТОЙЧИВОГО РАЗВИТИЯ
Authors: Махмадали Б.Н.
Published: July 2023

Для обеспечения устойчивого развития необходимо развивать механизм природопользо- вания на основе изучения опыта других стран, их адаптации и применения к новым услови- ям. Создание внутренних рынков по торговле квотами на выбросы, позволит усовершен- ствовать процесс управления эколого-экономических механизмов в регионах для обеспече- ния устойчивого еѐ развития.
СОВРЕМЕННЫЕ АСПЕКТЫ ПРОФИЛАКТИКИ И ЛЕЧЕНИЯ МИКОЗОВ СТОП
Authors: Рахматов А.Б. , Икрамова Н.Д. , Абидова З.М.
Published: July 2023

В статье изучено состояние иммунной системы у больных микозом стоп в зависимости от клинической формы забо- левания. Во всех клинических формах микоза стоп отмечается нарушение в работе системы иммунитета, который выра- жается дисбалансом как клеточного, так и гуморального звеньев иммунной системы, а также снижением функции неспе- цифической защиты организма. Применение энзимного препарата Вобэнзим для восстановления выявленных нарушений в иммунной системе оказывает более выраженный положительный эффект в восстановлении выявленного дисбаланса в системе иммунитета, чем при традиционной терапии.
ИСCЛЕДОВАНИЕ СПОСОБОВ ВЕДЕНИЯ ВЗРЫВНЫХ РАБОТ В ОБВОДНЁННЫХ СКВАЖИНАХ НА ОТКРЫТЫХ ГОРНЫХ РАБОТАХ
Authors: Нутфуллоев Г.С. , Гаибназаров Б.А.
Published: July 2023

В статье рассмотрены факторы, влияющие на характер и интенсивность обводнѐнности скважин. Предложены пути решения проблем совершенствования взрывных работ в обводнѐнных породах на карьерах с целью снижения их себестои- мости, заключающиеся в создании новых, более совершенных и экономичных взрывчатых материалов для применения в обводнѐнных породах, усовершенствовании технологии ведения взрывных работ существующими взрывчатыми материа- лами, выборе и использовании в конкретных условиях наиболее экономичных ВВ и осушении обводнѐнных скважин или изо- ляция зарядов от воды, что позволит использовать неводоустойчивые ВВ. Рассмотрена конструкция специального погружного устройства для удаления воды и шлама из буровых скважин, разработанного авторами статьи.
DEVELOPMENT OF A GRAPHO-ANALYTICAL MODEL OF THE CROSS-SECTIONAL PROFILE OF THE FIELD ON THE SLOPE
Authors: Мислибаев И.Т. , Самадова Г.М.
Published: July 2023

В работе рассмотрены вопросы развития режима работы горных работ месторождения на косогоре. Определены отработки месторождения выраженные в форме рабочего борта карьера. Исследованы пути моделирования поперечного профиля месторождения.
A COMPREHENSIVE STUDY OF THE MINERAL SALTS OF LAKE MULLALY OF THE CENTRAL KYZYLKUM
Authors: Шарипов Ш.Ф. , Мирзаев А.У. , Заирова Ф.Ю.
Published: July 2023

В материале приведена информация о соленосном озере Муллалы Центральных Кызылкумов, описана история изученности района и представлена обзорная карта места ее расположения. Проведено комплексное исследование минеральных солей, представлены геологический разрез и космоструктурная схема, а также результаты анализа химического состава воды озера Муллалы. Обоснована необходимость проведения дополнительных геологоразведочных работ на данной территории.
ОПЫТ РАБОТЫ ПЕРЕРАБОТКИ ЗОЛОТОСОДЕРЖАЩИХ ТЕХНОГЕННЫХ ОТХОДОВ С ПРИМЕНЕНИЕМ ОБОРОТНЫХ ВОД
Authors: Санакулов К. , Чулиев Ф.Г.
Published: July 2023

Специалистами АО «НГМК», совместно с научными партнерами РФ проведены глубокие научно-исследовательские работы по эффективному вовлечению в переработку хвостов кучного выщелачивания со средним содержанием золота до 0,5 г/т и других вторичных ресурсов. По результатам проведенных работ принято решение о реализации нового инновационного проекта для переработки отходов кучного выщелачивания. В настоящее время проект полностью реализован и достигнуто сквозное извлечение 78%.
РАДИОМЕТРИЧЕСКИЕ МЕТОДЫ ДАТИРОВАНИЯ ВОЗРАСТОВ УРАНОВЫХ ОБРАЗЦОВ НЕКОТОРЫХ МЕСТОРОЖДЕНИЙ КЫЗЫЛКУМОВ
Authors: Солиев Т.И. , Аллаберганова Г.М. , Музафаров А.М.
Published: July 2023

В данной статье приведены результаты по определению содержаний U, Ra, Pb в некоторых урановых образцах, значе- ние коэффициентов радиоактивного равновесия Крр между радионуклидами 226Ra/238U и возрастов некоторых урановых образцов. Приведена построенная зависимость коэффициентов радиоактивного равновесия с возрастом образцов.
TOSHQAZGAN GRAFIT RUDASINING HUSUSIYATLARINI OʹRGANISH VA ORGANIK MODDA YORDAMIDA BOYITISH USULLARI
Authors: Umarov Sh.A. , Kuylieva Sh.D. , Sharafutdinov U.Z.
Published: July 2023

Hozirgi kunda Fanlar akademiyasi Navoiy bo‘limi xodimlari tomonidan Buxoro viloyati Peshku tumanida joylashgan grafit konidagi rudalarning namunalari organik modda flotatsion usulini qo‘llagan xolda boyitilib ularning xususiyatlari o‘rganilmoqda. Ilmiy tadqiqotlar laboratoriya sharoitida olib borilmoqda. O‘rganish jarayonida aktual masalalar ko‘rib chiqilmoqda va tahlillar asosida ularni yechimiga qaratilgan. Ushbu maqolada shu masalalar o‘z yechimini topgan.
ШАГ В РАЗВИТИЕ ЭНЕРГЕТИКИ РЕСПУБЛИКИ УЗБЕКИСТАН
Authors: Норбаев С.И. , Джураев А.О.
Published: July 2023

Развитие энергетики Республики Узбекистан одно из актуальных и важнейших требований нынешнего времени. Опережающие темпы роста энергетики необходимы для общего прогресса нашей страны, в развитии техники, роста экономики и уровня жизни. Строительство новых заводов и фабрик, развитие предпринимательской деятельности, част- ного сектора и уровня жизни населения требует больших энергозатрат в потреблении электроэнергии. Данное развитие даѐт импульс в строительстве новых ТЭС, ГЭС и использования возобновляемых источников электроэнергии, значение которого является одним из главных показателей экономического уровня страны и отражает общее состояние произво- дителей сил.
OLIVINE LAMPROPHYRE DIKES IN GRANITOIDS OF THE ZIRABULAK INTRUSION: COMPOSITION AND NATURE (SOUTHERN TIAN SHAN)
Authors: Ишбаев Х.Д. , Курбанов А.А. , Утамурадов Э.А. , Ким М.А.
Published: July 2023

Институт геологии и геофизики им. Х.М. бдуллаева УГН Госкомгеологии РУз. В статье охарактеризованы дайки оливиновых лампрофиров (одинитов) в гранитоидах Зирабулакского интрузива. Они образуют серии даек различной мощности (от 20 см до 1,8 м) субширотного простирания, характеризующейся лам- профировой структурой с наличием вкрапленников (40-60%) оливина, титанавгита и роговой обманки. Основная масса призматическизернистая и состоит из плагиоклаза и цветных минералов. Характерны наличие сульфидных минералов – пирротина, халькопирита и пирита. Дайки специализированы на цезий, молибден, гафний, серебро, особенно мышьяк, селен, висмут. Они являются гиперстен-корунд нормативными и образовались из подкорового магматического очага.
НОВЫЕ ДАННЫЕ О ВЕЩЕСТВЕННОМ СОСТАВЕ РУД ФОСФОРИТОВОГО МЕСТОРОЖДЕНИЯ ДЖЕРОЙ-САРДАРА (ЦЕНТРАЛЬНЫЕ КЫЗЫЛКУМЫ)
Authors: Орипов С.Г. , Петров С.Ю. , Исокова Н.И.
Published: July 2023

В данной работе представлены результаты изучения вещественного состава Джерой-Сардаринского месторождения. Исследования проводились на электронном сканирующем микроскопе, а так же был проведѐн рентгенофлуоресцентный анализ. Полученные данные позволили выделить фосфорсодержащие минералы, сульфиды, минералы самородных и редких элементов, некоторые из которых оказались новыми для данной территории.
CO-EXTRACTION OF IRON FROM BACTERIAL OXIDATION OF GOLD-BEARING SULPHIDES
Authors: Эргашев У.А. , Санакулов У.К.
Published: July 2023

В АО «Навоийский горно-металлургический комбинат» (НГМК) для переработки золотосульфидного сырья применяется технология биоокисления. В процессе окисления сульфидных минералов железо переходит в жидкую фазу пульпы биокека, которое является вредной примесью при последующем его цианировании. Для удаления железа кек биоокисления отмывают методом противоточной декантации (ПТД), слив ПТД содержащий железо нейтрализуется и сбрасывается в хвосты. Ранее проведенными работами разработан способ получения железа из слива ПТД, внедрение в производство которого осложнено наличием следов золота в данном стоке. В настоящей статье приводятся результаты исследований по извлечению золота из слива ПТД.
REDUCING THE AMOUNT OF CONCENTRATION OF SUSPENDED PARTICLES CARRIED AWAY BY THE CIRCULATING WATER OF THE COUNTERCURRENT DECANTING OF THE BIOCAKE PROCESS
Authors: Санакулов К. , Эргашев У.А. , Ахатов Н.А. , Ашуров О.Т.
Published: July 2023

После бактериального окисления сульфидных минералов окисленную твѐрдую фазу необходимо отмыть от мышьяка, растворенного железа перед цианированием. Недостаточная отмывка биокека перед цианированием приводит к низкому извлечению золота, высокому расходу цианидов и чрезмерному пенообразованию в процессе сорбционного цианирования. В результате проведѐнных исследований, определено, что сгущение биокека с повышением температуры до 60єС приводит к снижению кинематической вязкости жидкой фазы и это способствует уменьшению количества теряемого золота с продуктами нейтрализации кислых стоков.
РЕЗУЛЬТАТЫ ИССЛЕДОВАНИЙ ФИЗИКО-ХИМИЧЕСКИХ CВОЙСТВ МЕДНЫХ ПЕСЧАНЫХ РУД МЕСТОРОЖДЕНИЯ «БАБАТАГ»
Authors: Рахманов И.Ю. , Абдурахмонов С.А. , Шакаров Т.И.
Published: July 2023

Месторождение медистых песчаников Бабатаг является одним из перспективных направлений развития медной промышленности Узбекистана. Данная статья посвящена изучению физико-химических свойств медистых песчаных руд. Исследованы минералогические, физические и технологические свойства отобранных проб. Атомно-абсорбционными, фотометрическими, гравиметрическими методами химического анализа определено содержание породообразующих оксидов и основных, также сопутствующих ценных элементов.
EVALUATION OF THERAPEUTIC EFFICACY OF ALOE VERA GEL FOR EXCISIONAL WOUND HEALING MECHANISM USING ANIMAL MODEL
Authors: PERVEEN A , ABBAS S , KHAN SU , MAZHAR M , FIAZ A
Published: July 2023

Wound-healing diseases are considered significant clinical issues in patients, which become more complicated in association with obesity, diabetes mellitus, and high blood pressure conditions. Various therapeutic options were available for the wound-repairing process. The current study project evaluated the healing properties of Aloe Vera gel on epidermal wounds in rats. Experimental animals (adult rats) were divided into groups A, B, and C with equal distribution. These groups represent treatment, without treatment, and control, respectively. A pair of wounds measuring 2cm x 2cm each was created hygienically on the back of each rat lateral to the spinal cord. The wounds were treated with homogenized Aloe Vera gel, while the injuries in the second group were treated with normal saline. Blood samples were collected on days 21 for hematology analysis with a standard method. Animals in group ‘A’ had significantly faster healing with shorter days of skin fall-off than the control and untreated group. Further biochemical changes in the packed cell volume, mean corpuscular volume, lymphocyte and neutrophil counts also showed significant results compared to the control group. The study concluded that Aloe Vera effectively treated epidermal wounds in adult rat models. An improvement occurred in the hematological profile of the experimental animals. These findings will go a long way in expanding the horizon of the clinical application of this plant in solving wound-healing problems in humans and other animal species.
A case study of agricultural sustainability in an arid clear – felled site : A cautionary note
Authors: Pal R. , Sharma Ajay
Published: July 2023

By maintaining plantation for 14 years, a difficult site Village Dhanawas, District Gurgaon, Haryana in arid Aravalli hills was reclaimed. The plantation was a major fodder source but was clear-felled in 1999 and leased out for agriculture. Freshly reclaimed site had potential of sustainable higher yields. The inputs used in the site and the income generation were studied for two years to assess the agricultural sustainability. The lessee farmer made enormous savings and earned handsome profits from crops. The farmer’s benefits were compared with those of three farmers cultivating adjoining fields. Although the advantage of the site amelioration was still evident in second year, but the fall in the monetary advantages indicated that benefit of site amelioration may be threatened. However, maintenance of sustainable yields may require additional periodic external inputs and rejuvenation.
Spaliny silników Diesla mierzone jako węgiel elementarny Metoda oznaczania w powietrzu na stanowiskach pracy
Authors: Szewczyńska Małgorzata
Published: July 2023

W Polsce dotychczas nie było konieczności oznaczania stężenia węgla elementarnego (EC) w celu oceny narażenia inhalacyjnego pracowników, ponieważ polska wartość NDS jest ustalona dla frakcji respirabilnej spalin silników Diesla. Nie ma również żadnych danych dotyczących poziomu stężeń EC w powietrzu stanowisk pracy, a narażenie na ten niebezpieczny dla zdrowia czynnik dotyczy bardzo dużej populacji pracowników zatrudnionych m.in. w podziemnych wyrobiskach górniczych, jak również strażaków, kierowców tirów, autobusów, a także pracowników stacji obsługi samochodów (Szymańska i in. 2019). Wprowadzenie do Dyrektywy Parlamentu Europejskiego i Rady (UE) 2019/130 z dnia 16 stycznia 2019 r. wartości BOELV 0,05 mg/m3 dla spalin silników wysokoprężnych Diesla w środowisku pracy, mierzonych jako węgiel elementarny, wymaga dostosowania przepisów krajowych do tej wartości i opracowania metody oznaczania węgla elementarnego. Celem prac badawczych było opracowanie metody oznaczania węgla elementarnego w powietrzu na stanowiskach pracy na poziomie 0,005 mg/m3 . W wyniku badań opracowano metodę oznaczania węgla elementarnego w powietrzu na stanowiskach pracy z zastosowaniem termo-optycznego analizatora z detektorem płomieniowo-jonizacyjnym. Metoda polega na przepuszczeniu badanego powietrza zawierającego spaliny silnika Diesla przez fi ltr kwarcowy umieszczony w kasecie i analizie w odpowiednim programie temperaturowym. Uzyskano oznaczalność EC 0,0041 mg/m3. Całkowita precyzja badania wynosiła 5,3%, względna niepewność całkowita 11,6%, a niepewność rozszerzona 23,2%. Zakres tematyczny artykułu obejmuje zagadnienia zdrowia oraz bezpieczeństwa i higieny środowiska pracy będące przedmiotem badań z zakresu nauk o zdrowiu oraz inżynierii środowiska.
Fosforan trifenylu. Dokumentacja proponowanych dopuszczalnych wielkości narażenia zawodowego
Authors: Szparaga Mateusz
Published: July 2023

Fosforan trifenylu (TPP) jest bezbarwnym ciałem stałym o zapachu przypominającym fenol. Znajduje zastosowanie jako plastyfikator do produkcji: żywic, wosków, klejów, oprawek okularów i kosmetyków. Fosforan trifenylu charakteryzuje się małą toksycznością ostrą po narażeniu drogą: pokarmową, inhalacyjną, skórną. Wchłanianie z przewodu pokarmowego i z miejsca wstrzyknięcia jest powolne. W badaniach na zwierzętach fosforan trifenylu nie wykazywał działania drażniącego na skórę, ale powodował podrażnienie oczu u królików. Nie wykazywał działania mutagennego oraz nie wywoływał nowotworów u zwierząt (u ludzi brak danych). Fosforan trifenylu działa ogólnoustrojowo. W 13-tygodniowym badaniu toksyczności na szczurach Wistar przerost komórek wątrobowych i zmiany morfologiczne w tarczycy obserwowano przy dawce fosforanu trifenylu 105 mg/kg mc./dzień. Za wartość NOEL dla działania ogólnonarządowego i neurotoksycznego przyjęto dawkę 20 mg/kg mc./dzień. W badaniu NTP (2018) wyznaczono dolną granicę przedziału ufności dawki referencyjnej BMDL na poziomie 39 mg/kg mc. dla skutków ogólnoustrojowych, manifestujących się zmniejszeniem poziomu wolnej tyroksyny i cholesterolu HDL. We wszystkich badanych dawkach związku, tj. >55 mg/kg mc., stwierdzono zmniejszenie aktywności cholinesterazy w surowicy o 35 ÷ 70% – nie obliczono dawki referencyjnej BMD dla tego skutku. Po dawce 200 mg/kg mc./dzień u królików wystąpił zwiększony odsetek płodów bez dodatkowych płatów płuc. Za wartość NOAEL dla toksyczności rozwojowej przyjęto dawkę 80 mg/kg mc./dzień. Przyjmując wartość NOEL, obliczono wartość najwyższego dopuszczalnego stężenia (NDS) dla fosforanu trifenylu na poziomie 10 mg/m3 . Brak podstaw do ustalenia wartości chwilowej (NDSCh) oraz dopuszczalnej w materiale biologicznym (DSB). Substancja nie spełnia kryteriów klasyfikacji pod kątem wchłaniania przez skórę. Zakres tematyczny artykułu obejmuje zagadnienia zdrowia oraz bezpieczeństwa i higieny środowiska pracy będące przedmiotem badań z zakresu nauk o zdrowiu oraz inżynierii środowiska.
Izopren. Dokumentacja proponowanych dopuszczalnych wielkości narażenia zawodowego
Authors: Klimczak Michał , Kilanowicz-Sapota Anna
Published: July 2023

Izopren jest bezbarwną cieczą o dużej lotności, powszechnie stosowaną w przemyśle, głównie w produkcji polimerów. Jest także związkiem powstającym endogennie u zwierząt i ludzi. W Polsce liczba osób narażonych na izopren w 2020 r. wynosiła 36, w tym 8 kobiet. W latach 2020-2021 nie odnotowano pracowników zatrudnionych w warunkach powyżej 0,1 wartości NDS (tj. 10 mg/m3 ), jak i przekroczeń tej wartości. Dane o toksyczności izoprenu u ludzi są nieliczne, obserwowano jedynie słabe działanie drażniące na błonę śluzową nosa, gardła i krtani. W badaniach toksyczności przewlekłej izoprenu u myszy i szczurów (narażenie inhalacyjne) stwierdzano: zaburzenia hematologiczne, atrofię jąder, zmiany przednowotworowe oraz różne nowotwory. U myszy stwierdzono także skutki neurotoksyczne i trwałą degenerację istoty białej rdzenia kręgowego. Izopren u zwierząt doświadczalnych nie wpływał na rozrodczość oraz nie wywoływał toksyczności rozwojowej. W badaniach in vivo wykazywał działanie genotoksyczne, za które odpowiadał jego metabolit – diepoksyd. Z uwagi na działanie rakotwórcze izoprenu na myszy i szczury związek uznano za rakotwórczy kategorii 1B. Za podstawę do zaproponowania wartości NDS dla izoprenu przyjęto jego działanie neurotoksyczne obserwowane u myszy narażanych inhalacyjnie. Najniższe zastosowane stężenie 70 ppm (≈ 200 mg/m3 ) uznano za wartość LOAEC dla tego skutku. Zaproponowano stężenie 8 mg/m3 (2,8 ppm) jako wartość NDS dla izoprenu oraz oznakowanie substancji symbolem „Carc. 1B”. Brak jest podstaw do wyznaczenia wartości chwilowej NDSCh oraz dopuszczalnej w materiale biologicznym DSB, jak również do adnotacji „skóra”. Zakres tematyczny artykułu obejmuje zagadnienia zdrowia oraz bezpieczeństwa i higieny pracy będące przedmiotem badań z zakresu nauk o zdrowiu oraz inżynierii środowiska.
BİRİNCİ DÜNYA SAVAŞI VE KIBRIS
Authors: ÖZÇELİK Fatih
Published: July 2023

İngiltere, 1877-1878 Osmanlı-Rus Savaşı ile birlikte yaklaşık bir asırdır sürdürdüğü Osmanlı Devleti’nin toprak bütünlüğü politikasını terk ederek, doğu ticaret rotasının Doğu Akdeniz’deki kısmının güvenliği için önce sözleşme yoluyla Kıbrıs’a (1878) ardında da işgal etmek suretiyle Mısır’a (1882) yerleşti. İlk aşamada gücünü donanmasından alan İngiltere için Kıbrıs, bir deniz üssü olacak kadar alt yapıya sahip olmasa da stratejik konumu ve geliştirilebilir limanlar ve inşa edilecek depolama alanları ile İngiltere’nin amaç ve faaliyetleri için kullanılabilir olduğu kabul edildi. Fakat birkaç yıl sonra Mısır’ın işgal edilmesi ile birlikte İngiltere’nin Kıbrıs’a dair plan ve niyetleri etkisini kaybetti.

4 Haziran 1878’den itibaren Kıbrıs’ın idaresinden sorumlu olan İngiltere, Osmanlı Devleti’nin Birinci Dünya Savaşı’na dahil olması neticesinde 5 Kasım 1914’te Kıbrıs’ı tek taraflı ilhak kararıyla Britanya İmparatorluğu’nun hakimiyetine alındı. Akabinde de Kıbrıs savaşta olan Britanya İmparatorluğu’nun bir parçası olarak dolaylı olarak savaşa dâhil oldu. Birinci Dünya Savaşı sırasında İngiltere’nin savaş çabaları ve yükünü büyük oranda dominyonlar ve sömürgelerin karşıladı. Büyük savaş Kıbrıs için küçük boyutlarda yaşansa da onun da savaş yükünden payına düşenler vardı.

Bu çalışmamızda Birinci Dünya Savaşı’nın başlamasından hemen sonra Kıbrıs özelinde alınan kararlar ve savaş sırasında Kıbrıs’tan İngilizlerin savaş yüküne dâhil talepleri ve bunun savaştan hemen sonrasına yansımaları ele alınacaktır.
Source-Code Maintainability Evaluation Model for Software Products
Authors: Oumarou Hayatou , Kolyang
Published: July 2023

The maintainability index (MI) has been proposed to calculate a single number which expresses the maintainability of a system. This article presents a model for evaluating the maintainability of software products. The model improves the shortcomings observed in the maintainability assessment approaches in the quality assessment models SQuaRE (ISO25000), ISO 9126, Squale and the FCM standard. Its main innovation is to take into account the importance of entities in the system when calculating the maintainability score. This implies that the same type of defect will have a different score depending on the entity presenting it. Seven experts with several years of experience evaluated the model. They confirmed the effectiveness and usability of the model. Then, we compared our model with the Squale maintainability index and the classical maintainability index. The results show no correlation between these models. The implications are that each method gives a slightly different view of maintainability.
Insomnia Related to Stress and Anxiety in Adolescence
Authors: Khan Mashal , Aslam Maria , Naqvi Alveena , Baloch Hooria , Rafique Aiman , Bukhari Sabahat
Published: July 2023

Insomnia, anxiety, and sadness are all linked in adolescence, according to the research. Anxiety and depression disorders are common and are linked with undesirable consequences. Objective: To better understand the interconnection between sleeplessness, anxiety disorders, and major depression in a community-based sample of adolescents. Methods: A cross sectional study was conducted at The University of Lahore, Lahore, during 4 months. A pre-tested questionnaire was used to collect data from 100 students through convenient sapling technique. SPSS version 21.0 was used to store and analyze the data. Results: The results revealed that insomnia is not common in mostly students but they have sleep issue due to exam disturbance and their diet. Late night phone usage is also a major cause in this study. Many students are worried about their current life situation and mostly have snore and choking issues due to worries. In general, the link between sleeplessness and depression was stronger and more constant in patients with serious depression than in those with depression symptoms. Conclusion: Adolescent insomnia has a significant impact on future health and functioning, and it is thought to cause and perpetuate a variety of emotional and behavioral issues, notably anxiety and sadness
The Evolving Role of Nurses in Patient-Centered Care
Authors: Riffat Mehboob
Published: July 2023

As the healthcare landscape continues to evolve, so too does the role of nurses in providing patient-centered care. Gone are the days when nurses were solely seen as assistants to physicians. Today, nurses play a vital and dynamic role in shaping healthcare outcomes, making significant contributions to the overall patient experience. With their holistic approach, empathetic nature, and clinical expertise, nurses have become key drivers in delivering personalized care that puts patients at the center. The evolving role of nurses in patient-centered care is characterized by their increased autonomy and decision-making authority. Nurses are no longer confined to following strict protocols but are actively involved in care planning, assessment, and coordination. This expanded scope of practice empowers nurses to develop personalized care plans that address the unique needs and preferences of individual patients, fostering a stronger therapeutic alliance.

Furthermore, nurses have become integral members of interdisciplinary healthcare teams. Their ability to collaborate and communicate effectively with other healthcare professionals ensures seamless coordination of care and promotes continuity across different settings. Nurses act as advocates for patients, facilitating dialogue and ensuring that their voices are heard in the decision-making process. This collaborative approach fosters a culture of patient-centeredness and enhances the overall quality of care delivered. Another significant aspect of the evolving role of nurses is the integration of technology in patient-centered care. Nurses are now proficient in using various digital tools, electronic health records, and telehealth platforms. These technological advancements enable nurses to collect and analyze patient data more efficiently, monitor vital signs remotely, and provide timely interventions. By leveraging technology, nurses can deliver care that is both personalized and evidence-based, optimizing patient outcomes.

The evolving role of nurses in patient-centered care marks a paradigm shift in healthcare delivery. With their expanded scope of practice, interdisciplinary collaboration, and integration of technology, nurses have emerged as leaders in shaping the patient experience. By placing patients at the center of care and tailoring interventions to their unique needs, nurses ensure that healthcare remains truly patient-centered. As the healthcare landscape continues to evolve, it is imperative that we recognize and support the pivotal role nurses play in championing patient-centered care for better health outcomes.
Analyzing the Interaction Between ABO Blood Types, Fingerprints, and Lip Prints among the Individuals of Lahore Region-A Research Article
Authors: Iftikhar Anwaar , Farooq Rida , Zaroon . , Rashid Daud Jumana , Irfan Muhammad , Naeem Iqra , Akhtar Mubeen , Mustafa Usama , Ali Muhammad , Maqsood Quratulain
Published: July 2023

Each person has a distinct lip printing and finger print, which are both utilized for personal identification and criminal investigations. Objective: To investigate the interaction between ABO blood group, lip prints and finger prints among both male and female participants. Methods: The study was conducted on 750 females and 550 males aged 18-50 from Lahore. Lip prints were classified using Tsuchihashi or Suzuki classification, while finger prints were classified using Kucken's or Michael's classification. Results were analyzed statistically using Microsoft Excel and SPSS version-21. Results: The pattern of loop was most common among the study group n = 1300 males (278 (50.55%), followed by Loop finger prints in 325 (43.30%) females. The most common blood type was AB+V 420(30%) among both groups. Both genders contain Type I lip pattern. The most common group of blood with fingerprint combination was AB+ve-Loop. AB+ve-Type I was the most common blood group versus lip print combination, with 104 individuals. Among the combination of lip prints or finger prints, Composite Type V had a smaller number of individuals. Both males and females scored 72. The composite type V-composite consists of A-ve, B-ve, AB-ve, or O-ve which showed the least common occurrence among the study group. Conclusions: Although blood typing, fingerprints, and lip prints each had unique characteristics. The correlation plays important role in identifying a certain person.
Ethical Challenges Faced by Nurses in Oncology Care During Breaking Bad News: A Qualitative Study
Authors: Qayyum Adeela , Kousar Samina , Farooqi Samina , Kalsoom Tahira , Kousar Saima , Sattar Fouzia
Published: July 2023

The emphasis of this paper is on the ethical challenges faced by nurses who broke bad news and worked in a tertiary care hospital in Punjab, Pakistan, with patients who were diagnosed with cancer. Objective: To explore the Ethical challenges faced by nurses in oncology care during breaking bad news. Methods: A qualitative phenomenological research design was employed. From the Oncology Department, 15 nurses with at least one year of experience were chosen as a sample. The University of Health Sciences in Lahore served as the study's setting. The Jinnah and Mayo Hospitals in Lahore, Pakistan, Oncology Departments were used to collect the data. Using an interview guide, semi-structured, in-depth face-to-face interviews were conducted to collect data. Thematic analysis framework approach was used to analyses the data that had been gathered. Results: The study's conclusions showed that nurses typically steer clear of BBN because of ethical issues. Conclusions: To give nurses sound knowledge and competence of BBN at the institutional level, capacity building and ongoing nursing education programmes must be set up.
Prevalence of Anxiety associated with COVID-19 Pandemic among University Students of Karachi
Authors: Alamgir Aisha , Ali Yasir , Khan Saeeda , Yousufzai Aziz Ur Rehman , Khan Farmanullah
Published: July 2023

The outbreak of corona virus made quite an impact on not only physical health but additionally mental health and psychological wellness. Objective: To determine the anxiety of corona virus among university students. Methods: The observational cross-sectional study was conducted. Data were obtained from different universities in Karachi. Undergraduate and postgraduate students of engineering and business administration were asked through questionnaire about the impact of COVID-19 after the consent from students and respective university. To assess the anxiety among the students valid and reliable corona virus anxiety scale (CAS) was used.385 participants were included with fulfilled inclusion criteria. Results: Overall 385 complete responses were obtained. Among population male gender predominated with a frequency of (n=208) 54.0% and females were (n=177) 46.0%. According to marital status and level of education, the majority (72.5%) of participants was single and of undergraduate level (56.4%) in education. The overall prevalence of anxiety was 13.5%. It was found that postgraduate students were less likely to be anxious about COVID-19 when compared with undergraduate students (OR = 0.34, p-value=0.002). Moreover, students whose family members and friends diagnosed with coronavirus were unlikely to have anxiety when compared to students with friends and family COVID-19 negative (OR = 0.32, p-value=0.004). Conclusions: It was concluded from this study that students possess adequate knowledge of COVID-19, instead they are psychologically anxious. Anxiety, psychological distress and other symptoms of mental illness are correlated with the outspread of any infectious disease.
Anesthetic Management and Role of TAP (Transversus abdominis plane) block and GBS (Gullain barre syndrome) Block in a Pregnant Patient with GBS and Psychiatric Illness, A Case Report
Authors: Bakhtawar Javeria , Siraj Sheema , Hussaini .
Published: July 2023

We report a case of 26 years parturient, with GBS manifested by psychiatric illness scheduled for hysterotomy. Our case is unique in a way that we managed her post-operative pain with TAP (transversus abdominis plane) block using ropivacaine, a long-acting amide local anesthetic with a potentially improved safety profile when compared to bupivacaine, as the literature showing the significance of TAP block in such patients in scanty. GBS with psychiatric illness made her anesthetic management, a challenge for us.
Prevalence of Chronic Fatigue in Post COVID-19 Patients in Twin Cities
Authors: Shahzadi Komal , Shahid Hamza , Malik Mahnoor , Raza Khan Hassan , Talha Muhammad , Nazir Pervisha
Published: July 2023

COVID-19 is linked to clinically severe symptoms despite the initial infection has subsided. The acute symptoms and recovery from coronavirus disease 2019 (COVID-19) are mainly in the headlines. However, many people who have recovered deal with ongoing physical, mental, and psychological issues long beyond the acute stage. The most persistent and debilitating of these symptoms is fatigue. Objective: To determine the prevalence of chronic fatigue in post COVID-19 patients living in Twin cities (Rawalpindi and Islamabad). Methods: A descriptive cross-sectional survey was conducted and the data were collected from the population living in Islamabad and Rawalpindi using a non-probability convenient sampling technique. The study was completed within 6 months after the approval from the ethical committee. Data were collected through a self-structured questionnaire containing demographics and a fatigue severity scale was used to assess chronic fatigue. Results: There were 382 participants enrolled in total. Out of which 54.2% were females and 45.8% were males. According to the results of the fatigue severity scale 65.4% participants reported chronic fatigue. Out of the 207 female participants, 148 (71.5%) reported chronic Fatigue while 159 (28.5%) were non-fatigued. The results also showed that out of 175 males, 102 (58.3%) reported chronic fatigue and 59 (41.7%) were non-fatigued. Conclusions: The current study concluded that most of the population in the Twin cities (Rawalpindi and Islamabad) had a prevalence of chronic fatigue in post COVID-19 patients.
Effectiveness of Optometric Photo-Therapy in Amblyopia
Authors: Younus Malaika , Abbas Shakila , Muhammad Nadeem Maryam , Iqrar Alia , Naseem Kausar , Bukhari Ayesha , Anwar Mahnoor
Published: July 2023

Anisometropic amblyopia is amblyopia due to difference of ≥1 D refractive error between two eyes. Objectives: To determine effect of optometric phototherapy on Visual Acuity and Contrast Sensitivity in older children with anisometropic amblyopia and to assess frequency of different degrees of amblyopia. Methods: A Quasi Experimental study was carried at Madinah Teaching Hospital and DHQ, Faisalabad. A total of anisometropic amblyopia subjects of both gender with age ranging from 8 to 18 years who had undergone refractive adaptation were included in the study. Other types of amblyopia and subjects who previously got treated for amblyopia were excluded. Subjects were given optometric photo-therapy for 4 weeks with red amber filter and post assessment was recorded. Descriptive and Paired sample t test statistical analysis was done with SPSS version 27.0. Results: 64% of the subjects had moderate amblyopia, 20% had mild amblyopia while only 16% had severe amblyopia. Visual Acuity improved from .4944 ± .19040 to .3552 ± .20390 (p<0.001) while Contrast Sensitivity improved from 1.3980 ± .21529 to 1.5480 ± .21960 (p<0.001) in optometric photo-therapy. Conclusions: Moderate amblyopia had more prevalence in comparison to both mild and severe amblyopia and Optometric Photo-therapy showed improvement of both visual acuity and contrast sensitivity in anisometropic amblyopia.
Comparison of the CAN (Clinical Assessment of Nutrition) Score with other Anthropometric Parameters to Determine the Importance of The Skin Fold Thickness for Foetal Nutrition Assessment
Authors: Gul Haji , Ullah Inayat , Khan Muhammad Qasim , Hayat Ahmad Khizar , Khan Asma , Asma Bibi
Published: July 2023

Skin fold thickness (SFT) evaluation is affordable, trustworthy, noninvasive and straightforward way of assessing fat in the body at all age-groups, including the infants. Objective: To do the comparison of the CAN (Clinical Assessment of Nutrition) score with various anthropometric parameters in assessing the importance of the skin fold thickness for foetal nutrition assessment. Methods: This observational and prospective study was carried out in the Pediatric Department of Bacha Khan Medical Complex, Swabi during the period from 21st July 2022 to 20th 2023. Total 130 babies had their anthropometry measured and their CAN scores recorded. The scores of CAN were calculated, and individuals with scores below 25 were deemed to have foetal malnutrition. For each neonate, skin fold thickness measurements were made by means of the Slim Guide caliper. At each site, two interpretations were recorded, and the mean was noted. The CAN score was correlated with all measurements of skin fold thickness, and statistical comparisons were performed. Results: 40.88% of children had foetal malnutrition. The mean (SD) for all skin-fold thickness sum at all sites for females and males were 4.26 ± 0.28 and 4.6 ± 1.89mm respectively. The sum of all data comparing fetal malnutrition and no fetal malnutrition using the mean (SD) of infant anthropometric data and Clinical Assessment of Nutrition score was significant statistically (p-value < 0.001). Conclusions: The five skinfold measurements sum can be a beneficial tool of screening for foetal malnutrition in terms of its relevance, simplicity and objectivity but is not specific or sensitive enough to replace the scores of CAN in identifying foetal malnutrition among newborns.
Exploring Trends and Barriers to Physical Activity in Adolescents/ School Going Children of Rawalpindi
Authors: Diba Farah , Shaheen Dure Yakta , Habib Muhammad Farrukh , Raisani Sher Afgan , Khan Javeria , Rehman Atta Ur , Faiz Sajida , Yasmin Rehana , Noreen Mehmoona , Nazeer Nazma
Published: July 2023

Adolescent’s active participation in PA may reduce the risk of chronic non-communicable diseases (NCDs) in adulthood. Barriers to PA and the association among these barriers were examined. Objective: To explore barriers to PA in the adolescent of public school of Rawalpindi, Pakistan. Methods: A Descriptive cross-sectional design, multistage cluster sample of adolescents (N = 400) with 214 (53.5%) male and 186 (46.5%) females was conducted. Independent variables such as sociodemographic, (i.e., education, age, gender, socioeconomic level), the discernment of barriers which did not permit to take part in PA, (i.e., fear of harm, lack of time, resources, social support, energy, and motivation, inaccessibility of recreational sports near residence and lacking skills); and adolescent’s physical activity participation was evaluated using WHO tool, international physical activity questionnaire (IPAQ). To investigate the connection between perceived barriers and PA participation, multiple regression analysis was used. Results: Of the 400 adolescents females are more likely to perceive a lack of time as a barrier to engaging in PA [OR 2.17 (95% CI (1.45---3.23)]. In a similar vein, those from lower socioeconomic levels are more likely to perceive a lack of motivation. [OR 2.17 (95% CI (1.42---3.32]. Regarding poor /fair Self-perception of health have a high chance of perceiving scarcity of resource [OR 4.25 (95% CI (2.72---7.43)] were viewed as obstacles to PA. Conclusions: Low socioeconomic status, lack and standard of education, and self-perception of health are indicators of are indicators of potential obstacles to physical activity
RECOGNIZING THE ROLE OF FARMERS IN INDIA'S ECONOMIC SUCCESS FOR FINANCIAL WELL-BEING
Authors: Vishwa Suresh  , Kumar Bharat
Published: July 2023

This research article aims to shed light on the pivotal role played by farmers in India's economic success. Through a comprehensive review and analysis of existing literature, policy documents, and statistical data, this study examines the socioeconomic contributions of farmers, evaluates policy frameworks, investigates challenges faced by farmers, and proposes strategies for their empowerment. The findings highlight the multifaceted contributions of farmers to the Indian economy, including agricultural production, employment generation, rural development, and poverty alleviation. Additionally, the study assesses the effectiveness of existing policies and institutional frameworks in supporting farmers' economic role, identifying areas for improvement. It also delves into the challenges and constraints faced by Indian farmers, ranging from limited access to credit and land tenure issues to market volatility and climate change impacts. Based on the analysis, this article proposes strategies for empowering and promoting the economic well-being of Indian farmers. These strategies encompass technological advancements, agricultural diversification, farmer collectives, market linkages, and policy reforms. By recognizing and addressing the barriers hindering farmers' economic progress, the article argues that India can unlock the full potential of its agricultural sector, foster rural development, and achieve sustainable economic growth.
Family Victimization Among Canadian Sexual and Gender Minority Adolescents and Emerging Adults
Authors: Blais Martin , Coutu Cameron , Boislard Marie-Aude , Hart Trevor A. , Walker Mattie , Parent Sylvie , Blais The SWERV Research Team
Published: July 2023

Objectives: This paper examines family victimization, well-being, and resilience among sexual and gender minority (SGM) adolescents and emerging adults aged 15 to 29 years.

Methods: Self-reported data were collected online (2019-2020) from 1,971 Canadian SGM youths. We used logistic regression to estimate the odds of: (a) having experienced family victimization over the past 12 months; (b) reporting well-being across the various frequencies of family victimization; and (c) thriving (i.e., flourishing despite having experienced family victimization).

Results: About 36% of participants experienced family victimization within the previous 12 months, with 13% reporting recurrent family victimization. Recurrent victimization was more prevalent among trans and nonbinary youths as compared to cisgender men, and was also more prevalent among socioeconomically disadvantaged participants. Recurrent victimization was significantly associated with higher odds of reporting internalized heterosexism, efforts to conceal gender and sexual orientation, languishing mental health, social anxiety, loneliness, and post-traumatic stress symptoms. Thriving participants were less likely to experience activity restrictions or to live with at least one parent, and more likely to score higher on authenticity scales, to report proactive norms against violence within their family, and to have food and economic security.

Conclusion: Despite recent advances in SGM rights and acceptance, SGM youths still face family victimization and compromised well-being.

Implications: These findings underline the importance of screening for family violence among SGM youths, particularly among trans youths and those of lower socioeconomic status. Findings also underline the importance of providing SGM youth both a safe family environment and material security.
Surgical and rehabilitation outcomes of patients undergoing through knee amputation compared with above knee amputation
Authors: Gordon H , Hebenton J , Davie-Smith F , Twiddy M , Smith GE , Carradice D
Published: July 2023

Background: Through knee amputation (TKA) may offer benefits over above knee amputation (AKA) in patients unsuitable for below knee amputation. This retrospective analysis compared surgical and rehabilitation outcomes post TKA and AKA. Methods: All TKA and AKA procedures recorded in the Scottish Physiotherapy Amputee Research Group dataset from January 2007 to December 2017 were included for analysis. All aetiologies, re-amputations and bilateral procedures were included. Demographic information, surgical outcomes (ie, further surgery, survival, and length of stay) and rehabilitation outcomes (ie, limb fitting, early rehabilitation, and mobility scores) were compared using descriptive and inferential statistics, including Kaplan–Meier, log-rank statistics and multivariate logistic regression. Results: In total, 4,197 procedures were included for analysis (3,471 initial AKA, 146 initial TKA, 580 initial below-knee or other level). Survival (p=0.809) and length of stay (p=0.696) were similar between groups, but TKA had significantly higher rates of further surgery (p<0.001). Multivariable analysis showed that patients who undergo TKA at centres which perform small numbers of TKA are significantly more likely to need further surgery (p=0.048). A significantly larger proportion of these patients had a limb fitted (25%) compared with only 12% of those from centres performing larger numbers of TKA (p=0.041). Overall, 31% (n=23) of those with TKA and 30% (n=725) of those with AKA had a limb fitted (p=0.854). All other rehabilitation outcomes were similar between groups. Conclusion: High volume centres have better surgical outcomes but appear to select patients not likely to limb fit. Despite this, similar proportions of patients did subsequently limb fit between groups, which may suggest superior rehabilitation potential for TKA compared with AKA, although the numbers performed in Scotland are very small. Prospective randomised studies are urgently needed to inform clinical practice.