نتایج جستجو برای: absorbing aerosol index aai

تعداد نتایج: 435632  

2014
A. K. Mishra K. Klingmueller E. Fredj J. Lelieveld Y. Rudich I. Koren

Introduction Conclusions References Tables Figures

Journal: :JASIST 2008
Blaise Cronin Lokman I. Meho

The Author Affiliation Index (AAI) of a journal (or set of journals) is defined as the percentage of authors publishing in that journal (or set) who are affiliated with a predetermined group of top-rated universities (or university departments). The AAI has been used to answer the following question: “Do faculty at the most prestigious universities have a disproportionate presence in the premie...

2006
Anup K. Prasad Ramesh P. Singh Menas Kafatos

[1] The Indo-Gangetic basin is characterized by dense fog, haze and smog during the winter season. Here, we show one to one correspondence during the winter season of aerosol optical properties with the location of thermal power plants which are single small spatial entities compared to the big cities. Our results indicate that power plants are the key point source of air pollutants. The detail...

2004
C. A. Randles L. M. Russell V. Ramaswamy

[1] Scattering of incoming solar radiation by sea salt aerosol is strongly dependent on relative humidity (RH) since hygroscopic particles take up water at high RH. Organic compounds may constitute up to 50% of marine aerosol mass in internal mixtures. We used a detailed thermodynamic and optical model to calculate hygroscopic growth and extinction of sea salt aerosol internally mixed with a so...

Journal: :Jurnal Kesehatan Perintis 2022

Antioksidan merupakan senyawa yang dapat menghambat reaksi oksidasi, dengan cara mengikat radikal bebas dan molekul sangat reaktif dalam tubuh manusia Bambu surat (G. pseudoarundinaceae) adalah salah satu jenis tanaman bambu epidemik Indonesia diketahui mengandung antioksidan. Tujuan dari penelitian ini untuk mengetahui gambaran aktivitas antioksidan total ekstrak etanol daun muda, tua surat, m...

2004
Gavin R. McMeeking Sonia M. Kreidenweis

The main aim of the study was to determine chemical, optical and physical characteristics of aerosol particles responsible for visibility degradation in Yosemite National Park. The park, located in the central Sierra Nevada range in eastern California, was impacted by smoke from wildfire activity in the western United States. Determining the contribution made by smoke to visibility degradation ...

Journal: :Arquivos brasileiros de cardiologia 2011
Jair B Miguel Jorge P Strogoff de Matos Frederico Ruzany Claudia S Miguel Sebastião J S Miguel Luiz T Naveiro Jocemir R Lugon

BACKGROUND Reduced ankle-arm index (AAI), inflammation and mineral bone disorder (MBD) are all associated with increased risk of death and cardiovascular complications in patients on hemodialysis (HD), but the association between them deserves clarification. OBJECTIVE To evaluate the association between abnormal AAI with MBD and inflammation in patients on HD. METHODS This was a cross-secti...

2004
Huiyan Yang Hiram Levy

[1] We examine the sensitivity of the daily integrated photodissociation rate (DIPR) coefficients of O3(O D) and NO2, the daily averaged O3 photochemical tendency, and OH concentration to variations of clouds and of four aerosol components: black carbon (BC), mineral dust, sea salt, and sulfate. Clouds and BC aerosols are found to be the most important. A comparison between the sensitivity stud...

2007
Hong Liao H. Seinfeld

The effect of a cloud layer on top-of-atmosphere (TOA) aerosol radiative forcing is examined by means of a one-dimensional vertical column simulation. To span the range between nonabsorbing and strongly absorbing particles, (NH4)2SO4 and soot aerosols are considered individually and in internal and external mixtures. For a cloud layer embedded within an aerosol layer it is shown that direct aer...

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