[Research Advances in Barrier Technology of Paddy Soil Co-contaminated with As and Cd].

Arsenic (As) and cadmium (Cd) are the most common toxic and harmful heavy metal elements in paddy soils and are easily transferred from the soil to grains. At present, As and Cd and their co-contamination in paddy soils in China are widespread, posing a serious threat to food security and human health. As and Cd have opposite environmental behaviors in soil, and the simultaneous remediation of co-contamination with As and Cd is a current technical difficulty for safe rice production.

Spin Qubit in a 2D Gd Na -Based Oxamato Supramolecular Coordination Framework.

Qubits are the basic unit of quantum information and computation. To realize quantum computing and information processing, the decoherence times of qubits must be long enough. Among the studies of molecule-based electron spin qubits, most of the work focused on the ions with the spin S=1/2, where only single-bit gates can be constructed.

Glucose Concentration Measurement by All-Grating-Based System.

An accurate, easy setup, low-cost, and time-saving method for measuring glucose concentration was proposed. An all-grating-based glucose concentration measurement system contained moving-grating-based heterodyne interferometry and a grating-based self-align sensor. By combining the first-order diffraction lights from two separated moving gratings by a polarization beam splitter and creating S- and P-polarized light interference by an analyzer, the interference signal could be a heterodyne light source with a heterodyne frequency depending on the relative velocities of the two moving gratings.

Analysis of risk factors of hepatocellular carcinoma and establishment of a clinical prognosis model.

Liver cancer is a common malignancy of the digestive system. Hepatocellular carcinoma (HCC) accounts for the most majority of these tumors and it has brought a heavy medical burden to underdeveloped countries and regions. Many factors affect the prognosis of HCC patients, however, there is no specific statistical model to predict the survival time of clinical patients.

Longitudinal changes in the hypothalamic-pituitary-adrenal axis and sympathetic nervous system are related to the prognosis of stroke.

Background And Purpose: This study sought to improve methods to identify biomarkers in the neuroendocrine system related to stroke progression to improve the accuracy of traditional tools for evaluating stroke prognosis.

Methods: Seventy-four stroke patients and 237 healthy controls were prospectively included. We measured urinary epinephrine (E), noradrenaline (NE), dopamine (DA) and cortisol (F) on days 1, 3, and 5 after stroke onset and plasma F, adrenocorticotropic hormone (ACTH), thyrotropin (TSH), prolactin (PRL), follicle-stimulating hormone (FSH), luteinizing hormone (LH) and growth hormone (GH).

Radiofrequency ablation of the great saphenous vein in the treatment of varicose veins of the lower extremities.

Objective: The present study aims to investigate the therapeutic effect and safety of radiofrequency ablation (RFA) of the great saphenous vein in the treatment of varicose veins of the lower extremities.

Methods: Sixty-nine affected limbs of 45 patients were treated with RFA of the great saphenous vein. All patients underwent retrograde puncture of the distal great saphenous vein under the guidance of B-ultrasound.

High-quality rapid laser drilling of transparent hard materials.

In this study, a hybrid method for high-quality rapid drilling of transparent hard materials which combines femtosecond laser (fs-laser) Bessel beam modifying materials and selective wet etching is presented. Using this method, micro-holes with no taper of different sizes (from 10 to 35 μm) and shapes (square, triangle, circular, and pentagram) are fabricated. Bessel beams of different lengths can be generated flexibly by loading different computer-generated holograms (CGHs) into the spatial light modulator (SLM) and the maximum length of light interacting with materials can reach 320 μm, leading to a reduction of the laser scanning time by two orders of magnitude.

Rapid Fabrication of Smooth Micro-Optical Components on Glass by Etching-Assisted Femtosecond Laser Modification.

Femtosecond laser (fs-laser) is unfavorable in applications for the fabrication of micro-optical devices on hard materials owing to the problems of low fabrication efficiency and high surface roughness. Herein, a hybrid method combining fs-laser scanning, subsequent etching, and annealing was proposed to realize micro-optical devices with low roughness on glass. Compared to traditional laser ablation, the fabrication efficiency in this work was improved by one order of magnitude, and the surface roughness was decreased to 15 nm.

Vector scanning subtractive manufacturing technology for laser rapid fabrication.

Herein, a vector scanning subtractive manufacturing technology is proposed to rapidly fabricate smooth micro-optical components, which is based on the vector scanning method and wet etching. Compared with the raster scanning method, the vector scanning method increases processing efficiency by nearly two orders and mitigates a buildup of stress around the laser processed region, avoiding the generation of cracks. The Letter demonstrates the fabrication of three-dimensional (3D) micro-structures with various sizes and morphologies.

Ancient DNA and multimethod dating confirm the late arrival of anatomically modern humans in southern China.

The expansion of anatomically modern humans (AMHs) from Africa around 65,000 to 45,000 y ago (ca. 65 to 45 ka) led to the establishment of present-day non-African populations. Some paleoanthropologists have argued that fossil discoveries from Huanglong, Zhiren, Luna, and Fuyan caves in southern China indicate one or more prior dispersals, perhaps as early as ca.

Periodic Microstructures Fabricated by Laser Interference with Subsequent Etching.

Periodic nanostructures have wide applications in micro-optics, bionics, and optoelectronics. Here, a laser interference with subsequent etching technology is proposed to fabricate uniform periodic nanostructures with controllable morphologies and smooth surfaces on hard materials. One-dimensional microgratings with controllable periods (1, 2, and 3 μm) and heights, from dozens to hundreds of nanometers, and high surface smoothness are realized on GaAs by the method.

Facile synthesis of porous CoO nanoflakes as an interlayer for high performance lithium-sulfur batteries.

The "shuttle effect" of long-chain polysulfides and the low conductivity of elemental sulfur lead to the inferior cycling stability of lithium-sulfur batteries and imped their practical applications. Herein, CoO nanoflakes with uniform macro pores distribution were synthesized via facile oil bath and calcination methods. Coupled with super P and coated on common polypropylene separators, they were expected to hinder the migration of lithium polysulfides (LiPSs) and accelerate the redox kinetics of polysulfides.

Thermal hazard investigation and hazardous scenarios identification using thermal analysis coupled with numerical simulation for 2-(1-cyano-1-methylethyl)azocarboxamide.

Polymers are salient participants in the current world, and roughly more than 40%-45% of all industrial polymers were produced by free radical polymerization. Azo-initiators now have been the foremost radical initiator with the virtue of low tendency to undergo chain transfer reactions. Nevertheless, azo-initiators are readily to decompose and release an immense amount of heats and gases under elevated ambient temperature.

Initial Experience of Dual-Port Laparoscopic Distal Gastrectomy for Gastric Cancer: A Single-Arm Study.

Introduction: Dual-port laparoscopic gastrectomy (DPLG) has been widely performed in recent years for treating gastric cancers. The present study reports our initial experience of dual-port laparoscopic distal gastrectomy (DPLDG).

Methods: From November 2016 to August 2018, 38 consecutive patients underwent DPLDG in our center.

Effects of the long-term consumption of hydrogen-rich water on the antioxidant activity and the gut flora in female juvenile soccer players from Suzhou, China.

Expending a considerable amount of physical energy inevitably leads to fatigue during both training and competition in football. An increasing number of experimental findings have confirmed the relationship between the generation and clearance of free radicals, fatigue, and exercise injury. Recently, hydrogen was identified as a new selective antioxidant with potential beneficial applications in sports.

Wet-etching-assisted femtosecond laser holographic processing of a sapphire concave microlens array.

We report rapid and mask-free fabrication of a sapphire concave microlens array by a combined method of femtosecond laser holographic processing and wet etching. The method features high fabrication efficiency, as crater arrays can be created on sapphire through a parallel processing manner, and the subsequent wet etching facilitates the formation of microlens arrays with a smooth surface. More importantly, the size and spacing of the concave microlenses can be well tuned by varying the distance of craters and etching time.

Histone modifier gene mutations in peripheral T-cell lymphoma not otherwise specified.

Due to heterogeneous morphological and immunophenotypic features, approximately 50% of peripheral T-cell lymphomas are unclassifiable and categorized as peripheral T-cell lymphomas, not otherwise specified. These conditions have an aggressive course and poor clinical outcome. Identification of actionable biomarkers is urgently needed to develop better therapeutic strategies.

Reduced Port Laparoscopic Distal Gastrectomy with D2 Lymphadenectomy.

Background: Reduced port laparoscopic surgery (RPLS), as a more minimally invasive treatment alternative to conventional laparoscopic surgery (CLS), has been increasing in recent years. With the accumulation of surgical experience and improvements in surgical techniques, the indication of RPLS has been gradually extended from benign diseases to malignant tumors, including gastric cancer. However, due to the lack of counteraction and triangulation, lymphadenectomy during reduced port laparoscopic gastrectomy (RPLG) for gastric cancer was considered challenging.

Multilevel phase-type diffractive lens embedded in sapphire.

Herein, we report a kinoform phase-type lens (KPL), which is fabricated by femtosecond (fs)-laser-induced refractive index change inside sapphire crystal. By fabricating volume phase gratings in sapphire and measuring the energy ratio of the grating's first and second diffraction orders, the refractive index change in sapphire induced by fs-laser modification was obtained. Then a four-level KPL was designed and fabricated inside sapphire following the experimentally established scaling of the refractive index change and fs-laser power.

[A study of rate of compliance with sepsis bundle in patients with severe sepsis and septic shock in emergency department].

Objective: To evaluate the occurrence of severe sepsis and septic shock and the rate of compliance with sepsis bundle in patients with severe sepsis and septic shock in emergency department.

Methods: A prospective study was conducted on consecutive adult patients who were sent to Emergency Department of Ruijin Hospital, Shanghai Jiaotong University School of Medicine by ambulance from May to June in 2009. The occurrence of severe sepsis and septic shock, and the number of the patients in whom who met the criteria of compliance with sepsis bundle were analyzed.

[Clinical and laboratory criteria for identification of early-onset stroke associated pneumonia: a prospective trial].

Objective: To investigate the significance of first determined contents of procalcitonin (PCT), C-reactive protein (CRP), soluble triggering receptor expressed on myeloid cell-1 (sTREM-1) and the clinical pulmonary infection score (CPIS) in the detection of early-onset pneumonia (EOP) developed in patients suffering from stroke.

Methods: From June 2009 to June 2010, 244 stroke patients admitted to the emergency intensive care unit (EICU) in Shanghai Fifth People's Hospital were included in this prospective study. Patients were excluded if they were discharged or died in 24 hours of admission, or pneumonia was diagnosed at the admission.