نتایج جستجو برای: lc 50

تعداد نتایج: 483465  

Journal: :Oncology reports 2012
Jarosław Szefel Wiesław Janusz Kruszewski Maciej Ciesielski Mariusz Szajewski Krzysztof Kawecki Ewa Aleksandrowicz-Wrona Jerzy Jankun Wiesława Lysiak-Szydłowska

Cancer cachexia (CC), a progressive loss of body mass, is associated with decreased energy production. Abnormally low levels of L-carnitine (LC) in skeletal muscle means that mitochondrial β-oxidation of long-chain fatty acids (LCFA) does not occur efficiently in patients with CC. We assessed the influence of CC on LC distribution and the effects of parenteral lipid emulsions on plasma LC level...

2005
STEPHEN J MARTIN

Pesticide resistance is the ability of a pest to survive normally lethal rates of a pesticide. The ability to develop resistance to a wide range of pesticides is a widespread phenomenon among the mites, so it was almost inevitable that varroa would become resistant against the commonly used acaricides such as the pyrethroids, taufluvalinate (Apistan) and flumethrin (Bayvarol). Studies found tha...

Journal: :Archives of surgery 2004
Derek E Moore Irene D Feurer Michael D Holzman Leonard J Wudel Carolyn Strickland D Lee Gorden Ravi Chari J Kelly Wright C Wright Pinson

HYPOTHESIS Long-term quality of life (QOL) in patients undergoing laparoscopic cholecystectomy (LC) incurring bile duct injury (BDI) and repair is comparable to that of patients undergoing uncomplicated LC. DESIGN Case comparison study. SETTING Secondary and tertiary care centers. PATIENTS Eighty-six patients incurring BDI during LC between January 1, 1991, and July 31, 2003, were surveye...

M. Yousefzadi, S. Mashjoor

Background: Pharmaceutical industries around the world are struggling for finding new approaches to fight cancer and many researchers are involved in this process to find new drug candidates. Aims: The current study aimed at investigating the new marine natural products with anticancer potential from the three Persian Gulf Holothuria sea cucumbers. <st...

Journal: :Journal of invertebrate pathology 2010
S P Wraight M E Ramos P B Avery S T Jaronski J D Vandenberg

Forty-three isolates of the entomopathogenic fungus Beauveria bassiana were screened for virulence against second-instar larvae of diamondback moth (Plutella xylostella) (DBM), European corn borer (Ostrinia nubilalis) (ECB), corn earworm (Helicoverpa zea) (CEW), and fall armyworm (Spodoptera frugiperda) (FAW); 30 of these isolates were tested against beet armyworm (Spodoptera exigua) (BAW). Hig...

Journal: :Dose-response : a publication of International Hormesis Society 2010
Xiaojun Gu Sufen Tian Dehui Wang Fei Gao Hui Wei

Based on the cooperative virulence index (c.f.) and LC(50) of fipronil, the interaction effect between short-term heat pretreatment and fipronil on 2(nd) instar larvae of diamondback moth (DBM), Plutella xylostella (Linnaeus), was assessed. The results suggested that pretreatment of the tested insects at 30 °C for 2, 4 and 8h could somewhat decrease the toxicity of fipronil at all set concentra...

Journal: :Toxicology 2000
F Shokri M Heidari S Gharagozloo M Ghazi-Khansari

T-2 toxin is a secondary fungal metabolite produced by various species of Fusarium. It is capable of killing cells by causing extensive damage to the cellular membrane. In this study, cytotoxicity of T-2 toxin in combination with different antioxidant materials, including vitamin C (vit. C), vitamin E (vit. E) and selenium (sel) was investigated in vitro using the neutral red cytotoxicity assay...

Journal: :Ecotoxicology and environmental safety 2012
Yanhua Wang Tao Cang Xueping Zhao Ruixian Yu Liping Chen Changxing Wu Qiang Wang

In this study, we used two different types of bioassay, a contact filter paper toxicity bioassay and a soil toxicity bioassay, to compare the acute toxicity of twenty-four insecticides belonging to six chemical categories on earthworm species, Eisenia fetida. Results of the contact filter paper toxicity bioassay indicated that neonicotinoids were super toxic to E. fetida (48 h-LC(50) value rang...

Journal: :Optics letters 2008
Philip J W Hands Stephen M Morris Timothy D Wilkinson Harry J Coles

A two-dimensional liquid crystal (LC) laser array has been demonstrated by photopumping a single LC sample using a lenslet array consisting of plano-convex microlenses. A 5 x 5 array of LC lasers (displaying evidence of mutual coherence) spaced by 1 mm inactive regions has been generated, which could be combined to yield a single monomode output and allows an almost 50-fold increase in energy d...

Journal: :Advances in zoology and botany 2022

The contamination of heavy metals in water is a worldwide issue which increasing day by due to the different types anthropogenic activities. These pose serious health risk on aquatic organisms. One such metal chromium. present study about determine 24h, 48h, 72h and 96 hours LC50 value hexavalent chromium for Nile Tilapia, Oreochromis niloticus. In study, 96h exposure Tilapia (Oreoch...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید