نتایج جستجو برای: scale spatial variation current approaches for assessing intra

تعداد نتایج: 11009081  

Journal: :Obstetrics, Gynecology and Reproduction 2022

Aim: to study the factors leading adverse perinatal outcomes allowing, on this basis, predict degree of risk. Materials and Methods. The medical records 155 patients who performed delivery in 2019–2021 were retrospectively analyzed. following groups formed: main group included 56 with (9 fetuses died antenatally, 36 born below Apgar score 5, 9 newborns within first 168 hours extrauterine life, ...

Journal: :iranian journal of parasitology 0
a shahbazi tabriz research center of infectious and tropical diseases, tabriz university of medical sciences, tabriz, iran m akbarimoghaddam department of medical parasitology and mycology, tabriz university of medical sciences, tabriz, iran s izadi national institute of health research, tehran, iran a ghazanchaii department of medical parasitology and mycology, tabriz university of medical sciences, tabriz, iran n jalali national institute of health research, tehran, iran a bazmani tabriz research center of infectious and tropical diseases, tabriz university of medical sciences, tabriz, iran

background:  fascioliasis is considered as the most important helminthic infection of cattle and sheep. traditional approaches using morphological and biologic characters cannot cause a cer­tainty in the accurate and precise identification and intra-specific differences of fasciola spp. in this study, we identified fasciola species using its-1 marker and described genetic variation of each spec...

علی‌اکبر حبشی, , مسعود اصفهانی, , بهزاد قره‌یاضی, , سید ابوالقاسم محمدی, , محسن فلاحتی عنبران, ,

Annual medics are used for hey production, soil protection, biological fixation of N2 and green manure. In the present study, the inter and intra specific genetic diversity and relatedness of 4 diploid and two tetraploid (M. rugosa and M. scutellata) annual medics were evaluated using microsatellite markers. PCR analysis was performed on genomic DNA from individual plant and PCR products were d...

خالوباقری, مهدیه,

Rapid development of urbanization has resulted in a number of problems in the cities of the lesser- and more-developed countries. Spatial inequalities are among the major problems the development of which has changed the spatial structure of the cities. The continuity of spatial inequalities and the decrease in life quality in some small-sized urban districts and the ineffectuality of the curre...

2018
Daniela Dias Oxana Tchepel

Analyzing individual exposure in urban areas offers several challenges where both the individual's activities and air pollution levels demonstrate a large degree of spatial and temporal dynamics. This review article discusses the concepts, key elements, current developments in assessing personal exposure to urban air pollution (seventy-two studies reviewed) and respective advantages and disadva...

Journal: :international journal of geo science and environmental planning 0
amir akram associate professor of geomorphology department, kharazmi university, iran, tehran nazila yaghoob nejad asl phd student of geomorphologic hazards, university of mohaghegh ardabili, ardabil ebrahim beheshti javid phd student of geomorphologic hazards, university of mohaghegh ardabili, ardabil

soil and land information is vital for land use planning and infrastructure development. maps of soils landscapes are powerful tools to guide sustainable planning and natural resource management. fuzzy set theory has been widely used in soil science for soil classification and mapping, land evaluation, fuzzy soil geostatistics, soil quality indices. in fuzzy logic-based approaches, soil spatial...

2017
Miriam A. Zemanova Humberto L. Perotto-Baldivieso Emily L. Dickins Andrew B. Gill John P. Leonard David B. Wester

Introduction: Deforestation significantly impacts large carnivores that depend on large tracts of interconnected forest habitat and that are sensitive to human activities. Understanding the relationship between habitat use and spatial distribution of such species across human modified landscapes is critical when planning effective conservation strategies. This study assessed the presence of pot...

Journal: :Marine pollution bulletin 2012
Y Thomas P Garen A Bennett M Le Pennec J Clavier

Bivalve larvae and hydrographic parameters were sampled over a range of spatio-temporal scales in a deep atoll lagoon. Bivalve larvae abundances were very high throughout the year: 18,550 m(-3) in average. Larvae were (i) concentrated at mid-depth with nocturnal ascent and diurnal descent, (ii) heterogeneously dispersed at the lagoon scale, (iii) subject to day-to-day variation in abundance and...

Journal: :Ecology 2012
Sergio Estrada-Villegas Brian J McGill Elisabeth K V Kalko

Climate, habitat, and species interactions are factors that control community properties (e.g., species richness, abundance) across various spatial scales. Usually, researchers study how a few properties are affected by one factor in isolation and at one scale. Hence, there are few multi-scale studies testing how multiple controlling factors simultaneously affect community properties at differe...

2016
Jan Hjort Timo T. Hugg Harri Antikainen Jarmo Rusanen Mikhail Sofiev Jaakko Kukkonen Maritta S. Jaakkola Jouni J.K. Jaakkola

BACKGROUND Despite the recent developments in physically and chemically based analysis of atmospheric particles, no models exist for resolving the spatial variability of pollen concentration at urban scale. OBJECTIVES We developed a land use regression (LUR) approach for predicting spatial fine-scale allergenic pollen concentrations in the Helsinki metropolitan area, Finland, and evaluated th...

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