Fungal degradation of metsulfuron-methyl in pure cultures and soil.

A fungal strain capable of utilizing metsulfuron-methyl as sole carbon and energy sources was isolated from a metsulfuron-methyl treated soil. The degradation characteristics of metsulfuron-methyl by this fungal strain were investigated in liquid culture and soil. More than 79% of metsulfuron-methyl at concentrations of 0.

Sex identification of the black swan (Cygnus atratus) using the locus-specific PCR and implications for its reproduction.

Over the last 4-5 years the small captive population of black swans (Cygnus atratus) has consistently failed to reproduce at the Chengdu Research Base of Giant Panda Breeding. The probable cause was hypothesized to be an abnormal sex distribution of the population. The black swan is an example of a sexually monomorphic species.

[Study on an unknown complex by gas chromatography/infrared spectrometry].

If the authors use normal infrared spectrometry, a lot of mixture compounds are difficult to characterize, because most of the peaks are overlapped in the spectra. Gas chromatography/Infrared spectrometry (GC-IR) are widely used in the separation and identification of organic complexes. The GC-IR can characterize the ingredients quickly and correctly that are difficult to do for normal infrared spectrometry.

Bioavailability of butachlor and myclobutanil residues in soil to earthworms.

To establish chemical extraction procedures for predicting bioavailability of butachlor and myclobutanil in soil, several solvent systems, including methanol, methanol-water (9:1), methanol-water (1:1), acetone-water (5:3), petroleum ether and water, were assessed for their feasibility in determining extractability of the target compounds from soil samples. Experimental data showed that the extractability of butachlor and myclobutanil by the solvents was well linearly correlated with their bioavailability to Eisenia foetida and Allolobophora caliginosa, indicating that these extraction procedures may be efficient for predicting bioavailability of the two pesticides. The concentrations of the pesticides accumulated in E.

Pd(OH)2/C-mediated selective oxidation of silyl enol ethers by tert-butylhydroperoxide, a useful method for the conversion of ketones to alpha,beta-enones or beta-silyloxy-alpha,beta-enones.

[reaction: see text] Pd(OH)2-catalyzed oxidation of silyl enol ethers by t-BuOOH gives either beta-silyloxy-alpha,beta-enones or alpha,beta-enones in good yields depending on the base used.

F-18 FDG positron emission tomography in non-Hodgkin lymphoma of the breast.

The breast is an uncommon site of development of extranodal non-Hodgkin lymphoma (NHL). Both primary and secondary involvement of the breast have been reported. A 36-year-old woman diagnosed with NHL underwent multimodality imaging for staging of the disease.

[Study of determination method for zinc in semen and liquor folliculi of artificial fecundation].

Zinc one of the key elements that influence human genetic health, was selectively determined in this paper. In the area of metal elements determination in body fluid, most samples used in the study are blood, plasma and saliva. No literature about genetic fluid determination has been found so far.

Small urine leak after renal transplantation: detection by delayed 99mTc-DTPA renography--a case report.

This case report involves a 45-y-old woman after cadaveric renal transplantation. The initial renal scan on the first postsurgical day showed normal findings. Subsequently, on the sixth postsurgical day, the patient had decreased urine output; 99mTc-diethylenetriaminepentaacetic acid renal scanning was performed again and did not show definite scintigraphic evidence of a urine leak.

Demonstration of excessive metabolic activity of thoracic and abdominal muscles on FDG-PET in patients with chronic obstructive pulmonary disease.

Purpose: The purpose of this study was to determine if an FDG-PET study was able to visualize muscle uptake of the chest and abdomen in patients with chronic obstructive pulmonary disease (COPD).

Methods: This study included 25 patients with COPD and 25 patients without COPD who had undergone a FDG-PET study. The nonattenuation-corrected images were used to determine the degree of FDG uptake in the intercostals, subscapular, abdominal rectus, and abdominal oblique muscles.

Adenosquamous carcinoma of the lung: CT-pathological correlation.

Aim: To correlate CT morphological features and histopathological findings of adenosquamous carcinoma of the lung.

Materials And Methods: In all, 29 patients underwent contrast-enhanced CT of an adenosquamous carcinoma of the lung, followed by resection of the cancer. Correlations between CT morphological and histopathological features were evaluated, including location, characteristics of margins, attenuation and the presence of necrosis.

Applications of fluorodeoxyglucose-PET imaging in the detection of infection and inflammation and other benign disorders.

FDG-PET has great potential in the evaluation of a variety of inflammatory and infectious disorders and possibly other benign disorders. FDG-PET is very helpful in the evaluation of chronic osteomyelitis, sarcoidosis, FUO, and differentiating toxoplasmosis from lymphoma in the central nervous system in HIV-positive patients. The assessment of efficacy of FDG-PET in the evaluation of arthroplasty-associated infection, large-vessel vasculitis, and other inflammatory and infectious disorders is ongoing but seems quite promising at this time.

[Effects of sustained chilling and low light on gas exchange, chlorophyll fluorescence quenching and absorbed light allocation in cucumber leaves].

Exposure of cucumber plants to low light (25 degrees C/18 degrees C, 100 micromol m(-2) s(-1)) and low temperature (12 degrees C/12 degrees C, 100 micromol m(-2) s(-1); 7 degrees C/7 degrees C, 100 micromol m(-2) s(-1)) resulted in a retardation or complete inhibition of plant growth, decreases in chlorophyll content, net photosynthetic rate, stomatal conductance and photosynthetic electron transport rate, but an increase in intracellular CO(2) concentration. Significant reversible reduction in Fv/Fm was found in plants after chilling at 7, but not in those after chilling at 12 degrees C. Chilling and low light treatment resulted in a decrease in chlorophyll content, followed by a decreased allocation of photons absorbed by PSII antenna to the photosynthetic electron transport and an increased allocation of thermal dissipation and excessive energy.

[Effects of iso-osmotic salt stress on the activities of antioxidative enzymes, H+-ATPase and H+-PPase in tomato plants].

Seedlings of tomato (Lycopersicon esculentum Mill.) were grown in nutrient solution to investigate the changes in malondialdehyde (MDA) and proline content, and activities of antioxidative enzymes, plasmalemma H(+)-ATPase, and tonoplast H(+)-ATPase and H(+)-PPase to iso-osmotic stress of Ca(NO(3))(2) (80 mmol/L) and NaCl (120 mmol/L). The results indicated that both Ca(NO(3))(2) and NaCl stress significantly increased superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) activities in leaf cytosols and chloroplasts.

18F-FDG PET in evaluation of adrenal lesions in patients with lung cancer.

Unlabelled: The purpose of this study was to assess the role of PET with (18)F-FDG in differentiating benign from metastatic adrenal masses detected on CT or MRI scans of patients with lung cancer.

Methods: This retrospective study analyzed (18)F-FDG PET scans of patients with lung cancer who were found to have an adrenal mass on CT or MRI scans. One hundred thirteen adrenal masses (75 unilateral and 19 bilateral; size range, 0.

Stereospecific deoxygenation of phosphine oxides with retention of configuration using triphenylphosphine or triethyl phosphite as an oxygen acceptor.

[reaction: see text] A new protocol for deoxygenation of various phosphine oxides with retention of configuration is described. The advantage of the new method includes milder conditions and considerably shortened reaction times. Mechanistic studies about the oxygen transfer between the starting phosphine oxide and the sacrificial triphenylphosphine are also presented.

Greenhouse and field cucumber genotypes use different mechanisms to protect against dark chilling.

Diurnal changes in photosynthetic gas exchange and chlorophyll fluorescence were measured after two consecutive night chills to reveal the photosynthetic characteristics and the mechanism of photoprotection in a greenhouse genotype Jinyou No. 3 (GH), and in a field genotype Jinyan No. 4 (OF) of cucumber (Cucumis sativus L.

18F-FDG PET for evaluation of the treatment response in patients with gastrointestinal tract lymphomas.

Unlabelled: (18)F-FDG PET is highly sensitive and specific for evaluation of the treatment response of nodal and extranodal diseases in patients with malignant lymphomas. However, no data are available in the literature with regard to (18)F-FDG PET for evaluation of the treatment response in patients with lymphomas with gastrointestinal tract (GIT) involvement. This study was undertaken to investigate the usefulness of (18)F-FDG PET in monitoring the response to the treatment of lymphomas in this setting.

Synthesis, characterisation, activities, cell uptake and DNA binding of [[trans-PtCl(NH3)2] [mu-(H2N(CH2)6NH2)] [trans-PdCl(NH3)2](NO3)Cl.

The dinuclear complex: [[trans-PtCl(NH(3))(2)] [mu-(H(2)N(CH(2))(6)NH(2))] [trans-PdCl(NH(3))(2)](NO(3))Cl (code named DHD) has been synthesized and characterized. The activity against human cancer cell lines including ovarian: A2780, A2780(cisR), cell up take, level of binding with DNA and nature of interaction of the compound with pBR322 plasmid and salmon sperm DNAs have been determined. The compound is found to exhibit significant anticancer activity against ovarian cancer cell lines: A2780, A2780(cisR) and A2780(ZD0473R)--about two times as active as cisplatin against A2780 cell line, about five times as active as cisplatin against A2780(cisR) and A2780(ZD0473R) cell lines.

Spontaneous regression of follicular, mantle cell, and diffuse large B-cell non-Hodgkin's lymphomas detected by FDG-PET imaging.

Spontaneous regression of non-Hodgkin lymphoma (NHL) has been reported in low-grade tumors but is an extremely rare event in intermediate- and high-grade disease. Documentation of spontaneous regression by serial fluorodeoxyglucose-positron emission tomography (FDG-PET) imaging has not been reported in the literature. We present 3 cases of spontaneous regression, 1 each of follicular lymphoma (FL), mantle cell lymphoma (MCL), and diffuse large B-cell lymphoma (DLBCL), which showed spontaneous regression on serial FDG-PET imaging.