نتایج جستجو برای: 1900 and early

تعداد نتایج: 16929709  

ژورنال: تحقیقات موتور 2020

In recent decades, rising greenhouse gas emissions have become a major challenge and concern. Environmental pollution is one of the greatest human challenges of the 21st century. Improving the performance of internal combustion engines and reducing the amount of pollutant emissions has always been a concern for researchers. The use of alternative fuels and the control and adjustment of the lamb...

Journal: :Geophysical Research Letters 2021

The uncertainties in Antarctic climate reconstructions due to scarcity of proxy records have restricted the understanding mechanisms change, and further hindered improvement models. Here, we provide a new record derived from water stable isotopes Dome A, East Antarctica ice core. Together with six other core records, A is used investigate temperature changes Plateau (EAP) during period 1–1900 C...

2007
T. Tarutina A. R. Samana F. Krmpotić M. S. Hussein

T. Tarutina1, A.R. Samana2, F. Krmpotić1,3,4, and M.S. Hussein1 1Departamento de Fı́sica Matemática, Instituto de Fı́sica da Universidade de São Paulo, Caixa Postal 66318, CEP 05315-970, São Paulo, SP, Brazil 2Centro Brasileiro de Pesquisas Fı́sicas, CEP 22290-180, Rio de Janeiro, Brazil 3Instituto de Fı́sica La Plata, CONICET, 1900 La Plata, Argentina and 4Facultad de Ciencias Astronómicas y Geofı́...

Abstract This study was conducted with the objective of investigating the practice of teaching early reading comprehension. The study was carried out in sixty-six Grade 2 government primary schools found in SNNPR State in Gedeo zone,Ethiopia, in the academic year 2015. Sixty-six English language teachers were subjects of the study. The study employed mixed method, specifically QUANT-QUAL one. D...

Journal: :World neurosurgery 2013
Shaun R Patel Joshua P Aronson Sameer A Sheth Emad N Eskandar

OBJECTIVE Lesion procedures for psychiatric indications have a history that spans more than a century. This review provides a brief history of psychiatric surgery and addresses the most recent literature on lesion surgery for the treatment of anxiety and mood disorders. METHODS Relevant data described in publications from the early 1900 s through the modern era regarding lesion procedures for...

2009
James Mahoney Kathleen Thelen

Once created, institutions often change in subtle and gradual ways over time. Although less dramatic than abrupt and wholesale transformations, these slow and piecemeal changes can be equally consequential for patterning human behavior and for shaping substantive political outcomes. Consider, for example, the British House of Lords. This is an institution that began to take shape in the thirtee...

2003

The study of oxidation-reduction processes in soils began in the 1900’s (Gillespie, 1920) and has since been applied to biological, limnological, and geochemical systems (Bass Becking, 1960). Early petroleum related studies concerned the redox characteristics of sediments, the preservation of organic material, and the ultimate generation of petroleum (Zobell, 1946, Krumbein and Garrels, 1952). ...

Journal: :international journal of occupational and environment medicine 0
ak susheela fluorosis foundation of india, india nk mondal fluorosis foundation of india, india a singh hindalco industries ltd., po-renukoot, district sonebhadra (up), india

background: fluoride is used increasingly in a variety of industries in india. emission of fluoride dust and fumes from the smelters of primary aluminum producing industries is dissipated in the work environment and poses occupational health hazards. objective: to study the prevalence of health complaints and its association with fluoride level in body fluids of smelter workers in a primary alu...

Journal: :تحقیقات مهندسی کشاورزی 0
مهدی عشقی دانشجوی کارشناسی ارشد گروه باغبانی دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران حسن حاج نجاری استادیار واحد دانه دارها، بخش تحقیقات باغبانی موسسه تحقیقات اصلاح و تهیه نهال و بذر سیامک کلانتری استادیار گروه باغبانی پردیس کشاورزی و منابع طبیعی دانشگاه تهران سیما دامیار کارشناس ارشد واحد دانه دارها، بخش تحقیقات باغبانی موسسه تحقیقات اصلاح و تهیه نهال و بذر ولی اله رسولی کارشناس ارشد و مربی، موسسه اصلاح و تهیه نهال و بذر، مرکز تحقیقات کشاورزی و منابع طبیعی قزوین

research was carried out in 2007 on 7 native summer-ripening apple cultivars grown in kamal abad karaj research station. the 16 year-old plants were grafted onto seed rootstocks. the cultivars were ghandak-e-kashan, golab-e-isfahan, golab-e-kohanz, mashad, assali, ghermez-e-rezaieh and a new cultivar--koli-e-mahallat (syn. escr). the aim of the study was to identify changes in qualitative and q...

Journal: :Kulturwissenschaftliche Zeitschrift 2022

Abstract Against the backdrop of climate crisis and Anthropocene injustices, this conversation unfolds concept allochrony to examine modernity as a temporal regime that relied on attribution non-simultaneity populations western colonies under ethnographic gaze 19th early 20th centuries. Positioning racialized signifier “the primitive” key foil in understanding articulation modern subjectivity a...

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