Power Production and Degradation of Pesticide Wastewater Through Microbial Fuel Cells with the Modified Activated Carbon Air Cathode by Hollow-Carbon and Carbon-Encapsulated Structures.

Microbial fuel cell (MFC) can degrade pesticide wastewater and recovery energy simultaneously, and the activated carbon (AC) air cathode has great prospects for practical application. However, insufficient active sites and the limitation of multi-step electron transfer for oxygen reduction reaction (ORR) requires that AC should be modified by highly efficient electrocatalysts. Herein, busing the confinement effect of carbon-encapsulated metal and hollow carbon, we designed a unique ORR catalyst of Fe-FeO-NC through utilizing the 2D leaf-like nanoplates of Zn-ZIF-L to load Prussian blue (PB) particles.

Ancient DNA indicates human population shifts and admixture in northern and southern China.

Human genetic history in East Asia is poorly understood. To clarify population relationships, we obtained genome-wide data from 26 ancient individuals from northern and southern East Asia spanning 9500 to 300 years ago. Genetic differentiation in this region was higher in the past than the present, which reflects a major episode of admixture involving northern East Asian ancestry spreading across southern East Asia after the Neolithic, thereby transforming the genetic ancestry of southern China.

Inhibition of Amphiphilic N-Alkyl-O-carboxymethyl Chitosan Derivatives on .

Cotton leaf spot is a widespread disease that occurs in the main cotton-producing area of China. In managing this disease, a novel chitosan-based biopesticide, an amphiphilic N-alkyl-O-carboxymethyl chitosan derivative, was prepared. The product was selected from variations of chitosan with different molecular structures, which were obtained via a two-step reaction.

Identification of endophytes with biocontrol potential from Ziziphus jujuba and its inhibition effects on Alternaria alternata, the pathogen of jujube shrunken-fruit disease.

Endophytic strains were isolated from different parts of a healthy "Dongzao" jujube (Ziziphus jujuba Mill. 'Dongzao') to find biocontrol agents against jujube shrunken-fruit disease caused by Alternaria alternata. The strains were screened using A.

Structural and compositional analysis of a casting mold sherd from ancient China.

Casting had symbolic significance and was strictly controlled in the Shang dynasty of ancient China. Vessel casting was mainly distributed around the Shang capital, Yin Ruins, which indicates a rigorous centralization of authority. Thus, for a casting mold to be excavated far from the capital region is rare.

Selection for Oil Content During Soybean Domestication Revealed by X-Ray Tomography of Ancient Beans.

When and under what circumstances domestication related traits evolved in soybean (Glycine max) is not well understood. Seed size has been a focus of archaeological attention because increased soybean seed weight/size is a trait that distinguishes most modern soybeans from their ancestors; however, archaeological seed size analysis has had limited success. Modern domesticated soybean has a significantly higher oil content than its wild counterpart so oil content is potentially a source of new insight into soybean domestication.

[Effect of repeated freeze-thaw on inhibition of Bacillus subtilis strain St-zn-34 to Alternaria alternate].

Objective: The effects of repeated freeze-thaw cycles(F-Tc) on cell shape of fermented Bacillus subtilis and the inhibitory activity to Alternaria alternata, the primary infection pathogen of jujube fruit shrunken disease, were determined using an endophytic B. subtilis strain St-zn-34 isolated from winter jujube.

Methods: The fermented broth was freeze-thawed after batch fermentation of the test strain.