نتایج جستجو برای: climatic chamber

تعداد نتایج: 73067  

2015
Christine Driller Stefan Merker Dyah Perwitasari-Farajallah Walberto Sinaga Novita Anggraeni Hans Zischler Axel Janke

The Indonesian island of Sulawesi harbors a highly endemic and diverse fauna sparking fascination since long before Wallace's contemplation of biogeographical patterns in the region. Allopatric diversification driven by geological or climatic processes has been identified as the main mechanism shaping present faunal distribution on the island. There is both consensus and conflict among range pa...

2002
Michael Schulz Manfred Mudelsee

Paleoclimatic time series are often unevenly spaced in time, making it difficult to obtain an accurate estimate of their red-noise spectrum. A Fortran 90 program (REDFIT) is presented that overcomes this problem by fitting a first-order autoregressive (AR1) process, being characteristic for many climatic processes, directly to unevenly spaced time series. Hence, interpolation in the time domain...

Journal: :Applied Adhesion Science 2021

Abstract The aim of the article was to determine compressive strength and strain an unmodified a modified epoxy compounds containing montmorillonite filler, as well effect temperature aging time on mechanical parameters considered compounds. subject research both adhesive were made in four variants, which included resins based bisphenol A curing agents: triethylenetetramine polyamide agent. als...

This research focuses on the need for preserving fruits in rural areas to prevent waste. The solar drier is made of vital chambers i.e. the concentrator chamber (that harvests the solar irradiance), the transport pipe (that transports the heat generated by convection) and hanger chamber (where the fruits are placed). The temperature within the concentrator chamber and hanger chamber was monitor...

زیوری دلاور, فاطمه , منظم, محمد رضا , نصیری, پروین ,

Introduction: The previous studies have used fibrous absorbents usually in the form of cone-shaped wedges for making anechoic and semi-anechoic chambers which their design and construction have been costly and difficult. The present study aimed to design a semi-anechoic chamber, using rectangular fibrous absorbents and also perform acoustic analysis for it. . Material and Method: In the presen...

2000
Ronald I. Dorn

For the last two decades, climatically based interpretations have been the major focus in evolutionary studies of dryland alluvial fans. Climatic hypotheses to explain the development of alluvial fans in southern Death Valley, however, do not fare well when they are assessed with criteria used by philosophers of science. First and foremost, dating techniques do not have the chronometric precisi...

2013
Andressa Duran Andreas L. S. Meyer Marcio R. Pie

Despite considerable interest in recent years on species distribution modeling and phylogenetic niche conservatism, little is known about the way in which climatic niches change over evolutionary time. This knowledge is of major importance to understand the mechanisms underlying limits of species distributions, as well as to infer how different lineages might be affected by anthropogenic climat...

Journal: :Proceedings. Biological sciences 2014
Maria Fernanda Bonetti John J Wiens

The evolution of climatic niche specialization has important implications for many topics in ecology, evolution and conservation. The climatic niche reflects the set of temperature and precipitation conditions where a species can occur. Thus, specialization to a limited set of climatic conditions can be important for understanding patterns of biogeography, species richness, community structure,...

Journal: :international journal of occupational hygiene 0
mehrdad helmi kohneshahri mahmoud mohamadian associate professor in occupational health engineering, department of occupational health engineering, school of public health, mazandaran university of medical sciences, sari, iran homa maleck khani ms student of occupational health engineering, department of occupational health engineering, school of public health, mazandaran university of medical sciences, sari, iran mehran pourhossein phd student of occupational health engineering, department of occupational health engineering, school of public health, tehran university of medical sciences, tehran, iran

spreading wood particles and attached colored materials in work places can cause many problems for woodwork industry workers. the aim of this study is to design and implement a local exhaust ventilation system to control wood dust and isocyanates simultaneously. the study was conducted on 18 workers in the paint workroom of a wood door industry. at first, an overview of the workplace indoor air...

Journal: :بینا 0
محمد پاکروان m pakravan ophthalmic epidemiology research center, shahid beheshti university of medical sciences, tehran, iranمرکز تحقیقات چشم- دانشگاه علوم پزشکی شهید بهشتی- تهران- ایران اعظم علوانی a alvani shahid bahonar university, kerman, iranمرکز تحقیقات چشم- دانشگاه علوم پزشکی شهید بهشتی- تهران- ایران الهام قهاری e ghahari مهدی یاسری m yaseri دانشکده بهداشت- دانشگاه علوم پزشکی تهران

trabeculectomy is the most common procedure performed in glaucoma patients to reduce intraocular pressure for a long-time period. this intervention can cause alterations in axial length (0.1-0.9 mm), anterior chamber depth (0.11±0.22 mm), and keratometry readings (1.07±1.14 diopter). these changes may linger for more than one year and may negatively affect the precision of intraocular lens powe...

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