نتایج جستجو برای: 260

تعداد نتایج: 11589  

2013
Ana Fonseca-Nunes Paula Jakszyn Antonio Agudo

15 16 Correspondence to: 17 Paula Jakszyn, MPH, PhD 18 Unit of Nutrition, Environment and Cancer 19 Cancer Epidemiology Research Programme 20 Catalan Institute of Oncology 21 Av Gran via 199-203 (08907) 22 Email: [email protected] 23 Tel: +34 93 260 74 01 /Fax: +34 93 260 77 87 24 L ́Hospitalet de Llobregat, Barcelona, Spain 25 26 27 Word count: Abstract 193 words. Manuscript: 5579 words, 1...

2011
J. Garcia Sole C. Zaldo F. Agullo - Lopez

The optical spectroscopy (absorption and luminescence) of a small concentration of lead (-10 ppm) incorporated into a NaC1:Sr crystal, containing a relatively higher concentration of Sr (-350 ppm), has been investigated. For samples annealed at room temperature after quenching, two overlapping absorption bands at 255 and 260 nm grow at the expenses of the A band typical of dissolved Pb +. For h...

Journal: :Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology 2012
T Schmierer G Ryseck T Villnow N Regner P Gilch

The photochemistry of ortho-nitrobenzaldehyde dissolved in tetrahydrofuran was studied by means of femtosecond UV/Vis and IR spectroscopy. Comparison was made of the spectral and temporal signatures for ~400 nm and ~260 nm excitation. The 400 nm excitation promotes NBA to its lowest excited singlet state of nπ* character whereas for 260 nm an upper excited state of ππ* character is addressed. O...

Journal: :Japanese Journal of Radiological Technology 1993

ژورنال: پژوهش های گیاهی 2016

این آزمایش به منظور بررسی تأثیر تنش سرماو(عدم تنش و بر خصوصیات بیوشیمیایی و فیزیولوژیکی سه هیبرید ذرت (سینگل کراس های 704، 400، 260) در گلخانه تحقیقاتی دانشکده کشاورزی دانشگاه فردوسی مشهد اجرا شد. جهت اعمال تنش سرما گیاهچه های چهار برگی ذرت به مدت 12 ساعت در معرض دمای پنج درجه سانتیگراد قرار گرفتند. کلیه نمونه برداری‌ها 24 ساعت پس از اعمال تنش سرما انجام شد. تنش سرما در دو رقم سینگل کراس 260 و...

2017
Jian Zhao Wei Du Yingjie Zhang Qingqing Wang Chen Chen Weiqi Xu Tingting Han Yuying Wang Pingqing Fu Zifa Wang Zhanqing Li Yele Sun

Strict emission controls were implemented in Beijing and adjacent provinces to ensure good air quality during the 2015 China Victory Day parade. Here, we conducted synchronous measurements of submicron aerosols (PM1) at ground level and 260 m on a meteorological tower by using a high-resolution aerosol mass spectrometer and an aerosol chemical speciation monitor, respectively, in Beijing from 2...

Journal: :Physical chemistry chemical physics : PCCP 2005
Dietmar Paschek Sascha Nonn Alfons Geiger

We report molecular dynamics simulations of a hydrophobic polymer-chain in aqueous solution between 260 K and 420 K at pressures of 1 bar, 3000 bar, and 4500 bar. The simulations reveal a hydrophobically collapsed structure at low pressures and high temperatures. At 3000 bar and about 260 K and at 4500 bar and about 260 K, however, an abrupt transition to a swelled state is observed. The transi...

Journal: :Nucleic acids research 1997
S Chen P L Nagy H Zalkin

GPAT and AIRC encode enzymes for steps one and six plus seven respectively in the pathway for de novo purine nucleotide synthesis in vertebrates. The human GPAT and AIRC genes are divergently transcribed from a 558 bp intergenic promoter region. Cis-acting sites and transcription factors important for bidirectional expression were identified. A cluster of sites between nt 215 and 260 are essent...

2013
Eun Jung Kim Woo Chul Chung Kang-Moon Lee Chang Nyol Paik Sang Bae Kim You Suk Oh Yang Woon Lee Sung-Goo Kang Seung June Noh

BACKGROUND/AIMS We aim to evaluate the association between promoter polymorphism of the clusters of differentiation 14 (CD14) gene and Helicobacter pylori-induced gastric mucosal inflammation in a healthy Korean population. METHODS The study population consisted of 267 healthy subjects who visited our hospital for free nationwide gastric cancer screening. Promoter polymorphism at -260 C/T of ...

Journal: :Polish journal of veterinary sciences 2012
W Barański S Zduńczyk T Janowski

The information about the occurrence of embryonic and fetal losses in dairy herds in Poland is limited. Thus, the objective of this study was to assess the pregnancy loss between days 30 and 45 (late embryonic mortality) and between days 45 and 260 after artificial insemination (AI) (foetal loss). The study was carried out in 8 dairy herds in north-east Poland. In total 954 cows were examined f...

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