Efficacy of totally laparoscopic compared with laparoscopic-assisted total gastrectomy for gastric cancer: A meta-analysis.

Background: Laparoscopic radical gastrectomy is currently the most common surgical approach for gastric cancer. The main difference between totally laparoscopic total gastrectomy (TLTG) and laparoscopic-assisted total gastrectomy (LATG) is the route of digestive tract reconstruction. However, TLTG is currently not widespread as the safety and feasibility of intracorporeal esophagojejunostomy is uncertain.

Tracing the geographical origin of rice by stable isotopic analyses combined with chemometrics.

Multivariate stable isotope analysis combined with chemometrics was used to investigate and discriminate rice samples from six rice producing provinces in China (Heilongjiang, Jilin, Jiangsu, Zhejiang, Hunan and Guizhou) and four other Asian rice producing countries (Thailand, Malaysia, Philippines, and Pakistan). The stable isotope characteristics were analyzed for rice of different species cultivated with varied farming methods at different altitudes and latitudes/longitudes. The index groups of δC, δN, δO, Pb and Pb were screened and established for the selected samples with different geographical features by means of principal component analysis (PCA) and discriminant analysis (DA), which would provide a sound technical solution for rice traceability and serve as a template for further research on the traceability of other agricultural products, especially plant-derived products.

Improved Discrimination for Brassica Vegetables Treated with Agricultural Fertilizers Using a Combined Chemometric Approach.

Multielement and stable isotope (δ(13)C, δ(15)N, δ(2)H, δ(18)O, (207)Pb/(206)Pb, and (208)Pb/(206)Pb) analyses were combined to provide a new chemometric approach to improve the discrimination between organic and conventional Brassica vegetable production. Different combinations of organic and conventional fertilizer treatments were used to demonstrate this authentication approach using Brassica chinensis planted in experimental test pots. Stable isotope analyses (δ(15)N and δ(13)C) of B.

Variation of the light stable isotopes in the superior and inferior grains of rice (Oryza sativa L.) with different geographical origins.

Trying to explore a new research angle to increase the resolution and accessibility of isotopic based traceability technique, light stable isotopes (δ(13)C, δ(15)N, δD and δ(18)O) in the superior (SS) and inferior (IS) grains of a rice cultivar Daohuaxiang were analyzed with relatively limited sample numbers and adjacent sites in Fujin and Wuchang, Heilongjiang Province, PR China. Distribution of δ(13)C, δ(15)N and δ(18)O in the SS and IS grains were found to be different. δ(18)O and δD can discriminate rice cultivation areas.

The combination of blue dye and radioisotope versus radioisotope alone during sentinel lymph node biopsy for breast cancer: a systematic review.

Background: The combination of blue dye and radioisotope is most widely used to identify sentinel lymph nodes (SLNs) in patients with breast cancer. However, some individual studies suggested that dual tracers did not have an advantage over radioisotope alone in detecting SLNs. We performed a systematic review to investigate the added value of blue dye in addition to radioisotope.

Concentrations of Inorganic Arsenic in Milled Rice from China and Associated Dietary Exposure Assessment.

Total arsenic (As) and inorganic As (Asi) in milled rice (n = 1653) collected from China were studied to evaluate the contamination level, distribution, and health risks. The mean concentrations of the total As and Asi were 116.5 and 90.

Variations in the natural ¹⁵N abundance of Brassica chinensis grown in uncultivated soil affected by different nitrogen fertilizers.

To further investigate the method of using δ(15)N as a marker for organic vegetable discrimination, the effects of different fertilizers on the δ(15)N in different growing stages of Brassica chinensis (B. chinensis) grown in uncultivated soil were investigated with a pot experiment. B.

Direct enantioseparation of nitrogen-heterocyclic pesticides on amylose-tris-(5-chloro-2-methylphenylcarbamate) by reversed-phase high-performance liquid chromatography.

In this study, 11 nitrogen-heterocyclic pesticides were stereoselectively separated on amylose-tris-(5-chloro-2-methylphenylcarbamate) chiral stationary phase, using reversed-phase high-performance liquid chromatography with diode array detector and optical rotation detector at 426 nm. The effects of mobile phase composition and column temperature (5-40 °C) on separation were investigated. When acetonitrile and water were used as mobile phase, satisfactory separations were obtained on amylose-tris-(5-chloro-2-methylphenylcarbamate) for four pesticides with elution orders of (+)/(-)-simeconazole (1), (-)/(+)-nuarimol (3), (-)/(+)-carfentrazone-ethyl (4), and (-)/(+)/(-)/(+)-bromuconazole (9) and part separations for three with elution orders of (-)/(+)-famoxadone (6), (+)/(-)-fenbuconazole (10), and (-)/(+)-triapenthenol (11).

Effect of different fertilizers on nitrogen isotope composition and nitrate content of Brassica campestris.

The effect of different fertilizers on the δ(15)N value, nitrate concentration, and nitrate reductase activity of Brassica campestris and the δ(15)N value of soil has been investigated through a pot experiment. The δ(15)N mean value of B. campestris at the seedling stage observed in the composted chicken treatment (+8.