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氮素是植物生长发育所需的大量营养元素，也是作物产量的主要限制因素之一。尽管氮元素在大气中含量丰富，但是不能直接被植物吸收利用，而豆科植物可以通过与根瘤菌共生将氮气转化为植物可直接利用的含氮化合物。根瘤作为共生固氮的场所，为根瘤菌提供固氮的微环境和能量。因此，根瘤器官的发育调控机制是共生固氮研究中最重要的科学问题之一。
Incidental Finding of Isolated Rosai-Dorfman Disease in the Tonsils of a 4-Year-Old Girl: A Case Report and a Brief Review of Current Practice in Tonsillectomy Specimen Handling
Tonsils Rosai-Dorfman Disease Microscopic Examination
2013/1/31
We report herein a case of isolated Rosai-Dorfman disease (Sinus Histiocytosis with Massive Lymphadenopathy) diagnosed upon routine microscopic examination of tonsils in a child. The patient is a 4 ye...
Medically Unexplained Symptoms (MUS): What Do Current Trainee Psychologists, Neurologists and Psychiatrists Believe?
Medically Unexplained Symptoms Somatisation Dissociation Clinical Training
2013/1/31
Objectives: Medically unexplained symptoms (MUS) are common in all medical settings. These conditions remain controversial, aetiology remains poorly understood and treatments have been slow to develop...
Current status of Radiologic Diagnosis for Mediastinal Lymph Node Metastases of Non-Small-Cell Lung Cancer: Retrospective Study of pN2 Cases
Non-Small-Cell Lung Cancer Mediastinal Lymph Node Metastasis
2013/2/19
Objective: Advances in diagnostic imaging techniques, such as 18F-fluorodeoxyglucose positron emission tomography (FDG-PET), have led to greater accuracy in preoperative mediastinal staging for patien...
CD4+/CD56+ Hematodermic Neoplasm Presenting in the Skin: A Tunisian Case Report and Current Review of the Literature
Blastic NK-Like T-cell Lymphoma Hyper-CVAD SMILE Prognosis Treatment
2013/1/30
The CD4+/CD56+ hematodermic neoplasm is a rare aggressive systemic neoplasm for which effective therapies have not yet been established, it is clinically characterized by cutaneous involvement with sp...
Unexpected Dramatic Response of Pretreated Invasive Thymic Malignancies on Pemetrexed-Case Report and Review of Current Treatment Modalities
Thymoma Pemetrexed Thymic Carcinoma Combined Modality Therapy
2013/1/31
Thymomas are rare and usually slowly growing tumors, originating from the epithelial layer of the thymus. Prognosis depends on the extent of invasion of adjacent tissues whereby multimodality treatmen...
In vitro effect of current antimalarial drugs on the survival of paired Schistosoma mansoni adult worms and their egg production
antischistosomal drugs antimalarial drugs Schistosoma mansoni
2010/12/10
Some field trials have already demonstrated the high antischistosomal potential of combination therapies using Artesunate (ART) and current antimalarial drugs (Boulanger et al., 2007; Mohamed et al., ...
Layered Manufacturing: Current Status and Future Trends
Layered Manufacturing Current Status Future Trends
2009/12/23
This paper reviews the emerging field of layered manufacturing. This field is little over 10
years old but a significant amount of research has been conducted and results to date are
quite promising...
Influence of Tissue Inhomogeneity on Eddy Current Distribution in Magnetic Stimulation Therapy for Urinary Incontinence—Using Threedimensional Experimental and Computer Models—
magnetic stimulation current distribution inhomogeneity abdomen model
2009/6/9
The effect of magnetic stimulation for the treatment of urinary incontinence has been explained as a re-activation of lost functions of the pelvic floor muscles. A model study was used to investigate ...
Current Status and Future Trend of Japanese Therapeutic Medical Device Industries —The Major Technologies to Support Future Japanese Economy
Status Therapeutic Medical Device Japanese
2009/6/1
Current Status and Future Trend of Japanese Therapeutic Medical Device Industries —The Major Technologies to Support Future Japanese Economy.
Amplifier spurious input current components in electrode-electrolyte interface impedance measurements
electrode-electrolyte interface impedance measurements input current components
2010/3/1
The drift originated either at the dc input bias offset current (Ios) of the integrated circuits, or in discrete transistors connected directly to the electrodes immersed in the cells, depending on th...
Estimation of current density distribution under electrodes for external defibrillation
current density distribution electrodes external defibrillation
2010/3/1
The current density distribution non-uniformity of circular electrodes is about 30% less than that of square-shaped electrodes. The use of an interface layer of intermediate resistivity, comparable to...
Current distribution in skeletal muscle activated by FES: Image-series formulation and isometric recruitment curve
Functional electrical stimulation Nonhomogeneous medium Green's function Current distribution
2010/1/7
Current distribution in skeletal muscle activated by FES: Image-series formulation and isometric recruitment curve.
Nanocrystalline Materials for High Temperature Soft Magnetic Applications: A Current Prospectus
Nanocrystalline Materials High Temperature Soft Magnetic Applications
2009/12/28
Nanocrystalline Materials for High Temperature Soft Magnetic Applications: A Current Prospectus.
Critical-Current Anisotropy Intergranular Coupling and Effective Pinning Energy in Bi2Sr2CaCu2O8+x Single Crystals and Ag Sheathed (Bi, Pb)2 Sr2Ca2Cu3O10+x Tapes
Critical-Current Anisotropy Intergranular Coupling Effective Pinning Energy Ag Sheathed (Bi, Pb)2 Sr2Ca2Cu3O10+x Tapes
2010/1/6
Critical-Current Anisotropy Intergranular Coupling and Effective Pinning Energy in Bi2Sr2CaCu2O8+x Single Crystals and Ag Sheathed (Bi, Pb)2 Sr2Ca2Cu3O10+x Tapes.