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Floccularia luteovirens, an important edible mushroom widely distributed in the Qinghai–Tibet plateau, is ecologically important as an ectomycorrhizal fungus and can form the fairy ring. To explore the influence of F. luteovirens fairy ring on soil microbial communities, we compared the soil microbial communities in three different fairy ring zones (inside the fairy ring (IN); beneath the fairy ring (ON); and outside the fairy ring (OUT)). A total of 1.77 million bacterial reads and 1.59 million fungal reads were obtained. Moreover, sequence clustering yielded 519,613 (57,735 per sample) bacterial OTUs, and 513,204 (57,023 per sample) fungal OTUs representing. Microbial diversity was lower in samples from the ON zone compared with the other two zones. Mycorrhiza helper bacteria (MHB) such as Bradyrhizobium and Paenibacillus were more common in the ON zone, and we isolated four potential MHB from rhizosphere soil. Canonical correspondence analysis showed that the soil nutritional condition and physical changes caused by F. luteovirens shaped the microbial communities in the ON zone. This is the first report on the study of soil microbial diversity influenced by fairy ring F. luteovirens, and further studies need to be conducted to study the ecological function influenced by this species. [ABSTRACT FROM AUTHOR]

According to the DQ-axis equation of the synchronous motor, the equations based on two-phase stationary coordinates were deduced in this paper. The relationship between the inductances in the two-phase stationary coordinates and the direct axis and quadrature axis inductances was studied and back electromotive force equation was given. The method to find the rotor position angle of the state of wide range frequency was proposed by the way of back electromotive force strong filtering. The principle of filter parameter designing was elaborated and the constraint conditions of this design were given in the considering digital controller. This project is simple and reliable, which is easy for engineering application. Through simulation example and experiment, the feasibility of this design method was verified. [ABSTRACT FROM AUTHOR]

Objective: To study the difference of immunological and inflammatory indices between mild type and severe type of adult pandemic (H1N1) patients., Methods: White blood cell, lymphocyte, monocyte, CD4(+) and CD8(+) T lymphocyte counts, level of C3 and C4, CH50, immunoglobulin A/G/M and CRP from 166 pandemic (H1N1) patients during acute and recovery phases were recorded and analyzed., Results: A lowered lymphocyte count and an elevated monocyte count were observed in both groups during acute phase. And both were corrected during recovery phase. The absolute values of CD4(+) and CD8(+) T lymphocytes were much lower in severe group than those in mild group. During acute phase, the level of c-reactive protein (CRP) was elevated in both groups while it was higher in the severe group than that in the mild group. During recovery phase, the CRP level fell after a rise in both groups while it was quicker in the severe group than that in the mild group. During acute phase, the majority of CH50 became mildly elevated. And it was higher in severe patients than mild ones., Conclusion: Lymphocyte count, CD4(+) & CD8(+) T lymphocyte counts and CRP & CH50 values provide useful information for the diagnosis of pandemic (H1N1) and the evaluation of its severity.

In order to ensure personal safety and prevent injury accident in machine tool operation, an infrared machine tool safety system was designed with infrared transmitting-receiving module, memory self-locked relay and voice recording-playing module. When the operator does not enter the danger area, the system has no response. Once the operator's whole or part of body enters the danger area and shades the infrared beam, the system will alarm and output an control signal to the machine tool executive element, and at the same time, the system makes the machine tool emergency stop to prevent equipment damaged and person injured. The system has a module framework, and has many advantages including safety, reliability, common use, circuit simplicity, maintenance convenience, low power consumption, low costs, working stability, easy debugging, vibration resistance and interference resistance. It is suitable for being installed and used in different machine tools such as punch machine, pour plastic machine, digital control machine, armor plate cutting machine, pipe bending machine, oil pressure machine etc.

Objective: To investigate the changes of blood corpuscles of patients with severe acute respiratory syndrome (SARS) in Beijing., Methods: Totally 43 patients (21 male and 22 female, 19-74 years old age range) diagnosed as of probable SARS were included in this study. Their corpuscles in the peripheral blood were tested every two days, and the results were analyzed., Results: Patients with SARS were more likely to develop leukocytopenia, lymphopenia and thrombocytopenia in the early period of disease than those in control group. The situation, especially lymphopenia and thrombocytopenia, could not be reversed in patients who died. Persistent low counts of lymphocytes and platelets at presentation might be associated with adverse outcomes., Conclusion: Low counts of leukocytes, lymphocytes and platelets were common among patients in the early stage of SARS. Persistent Lymphopenia and thrombocytopenia may be associated with the prognosis.

Objective: To study the clinical, laboratory, and radiologic features of 34 cases of severe acute respiratory syndrome (SARS) in Beijing., Methods: All patients were admitted to the isolation wards. Their demographic, clinical, laboratory, and radiologic characteristics were analyzed. Univariate and multivariate analyses were performed., Results: Eight patients came from a family, and 15 patients were medical staff. The mean age of patients was (33.4 +/- 13.4) years. The latent period varied from 2 to 14 days (median 4 days). The most common symptoms were fever (100%), palpitation (91.7%), myalgia (79.2%), headache (70.8%), diarrhea (73.9%) and cough (58.3%). The mean leucocyte count was (4.6 +/- 1.4) x 10(9)/L, and the mean lymphocyte ratio was 0.27 +/- 0.11. 68.4% of the patients had lymphopenia (absolute lymphocyte count < 1.3 x 10(9)/L). Other common findings included elevated levels of serum alanine aminotransferase, lactate dehydrogenase and erythrocyte sedimentation (76.2%, 28.6% and 47.8%, respectively), and decreased levels of serum iron and albumin (63.2% and 47.8%, respectively). Thirty-two cases had abnormal chest radiographs. In 2 cases in whom typical lung opacities could not be found on the initial plain chest radiographs, thoracic CT proved to be useful. Postmortem examination of 1 patient revealed marked edema with foci of hemorrhage and hyaline membrane formation in the lungs, hemorrhage necrosis and a obvious decline of cells in lymph glands. In a multivariate analysis (Stata 7.0), the independent predictor of an adverse outcome was advanced age (odds ratio per decade of life, 1.6; 95% CI, 1.08 to 2.63; P = 0.007)., Conclusions: Fever, lymphopenia, low serum iron and chest radiograph are helpful to diagnose SARS early; age is the independent predictor of an outcome.