Coupled effects of Fenton-like systems with different concentrations of HO/Biochar on diethyl phthalate removal: Dominant role of environmental persistent free radicals (EPFRs).

To investigate the impact of different HO concentrations on the Fenton-like systems of HO/biochar, this study examined the mechanism of the physical structure and environmental persistent free radicals (EPFRs) of biochar during diethyl phthalate (DEP) removal by the Fenton-like system. The peak-splitting method was utilized to differentiate EPFRs types in cotton stalk biochar produced at different temperatures. High-temperature environments promote π-electron delocalization, which facilitates phenyl π free radicals and σ-π oxygen-containing free radicals.

Comparative Assessment of Proportions of Urea in Blend for Nitrogen-Rich Pyrolysis: Characteristics and Distribution of Bio-Oil and Biochar.

This study aimed to investigate the effect of the urea content on the characteristics and distribution of nitrogen-rich bio-oil and nitrogen-doped biochar. Cellulose, cellobiose, and glucose were used as feedstock. Urea was used as the exogenous nitrogen source in nitrogen-rich pyrolysis at 500 °C.

Effect of pyrolysis conditions on environmentally persistent free radicals (EPFRs) in biochar from co-pyrolysis of urea and cellulose.

Biochar derived from nitrogen-rich pyrolysis of biomass can be used as a soil conditioner, but it contains a large amount of environmental persistent free radicals (EPFRs). EPFRs are a newly identified environmentally harmful substance, and the detection and research on EPFRs in nitrogen-rich pyrolyzed char is lacking. Biochars prepared from cellulose-urea mixtures at different temperatures, residence times, and urea ratios were analyzed in this study.

Microwave-assisted catalytic pyrolysis of moso bamboo for high syngas production.

Microwave-assisted pyrolysis of moso bamboo with the activated carbon-supported iron(III) ion catalyst was carried out with the aim of obtaining high quality and quantity syngas(H + CO). The effect of the catalyst on moso bomboo pyrolysis involving the temperature-rising characteristics, product distribution, tar conversion and gas compositions were investigated. The results indicated that the catalyst improved the microwave-absorption capability and increased the maximum reaction temperatures.

[Gene Polymorphism 24 Rare Blood Group Antigens of 11 RBC Blood Group Systems in Manchu Population of Harbin Area in China].

Objective: The purpose of this study was to investigate the 24 kinds of antigen gene polymorphism chara-cteristics in 11 RBC blood group systems of Manchu population blood donor in Harbin Area of China, so as to better perform the clinical blood transfusion and to avoid adverse transfusion reactions.

Methods: Twenty-four antigen genes (GYPB (S/S), Duffy, Kell, Dombrock, Diego, Kidd, Scianna, Colton, Lutheran, Yt, Mur) were assessed by the polymerase chain reaction sequence specific primers (PCR-SSP) in 11 blood type systems, including Fy, Fy; K, K; Do, Do; Di, Di; JK, JK; Sc1,Sc2; Co, Co; Lu, Lu; Yt, Yt; Kp, Kp; Mur, Mur2 among 200 Manchus in Harbin.

Results: The gene frequency of blood type system in Harbin Manchu GYPB (S/S) was as follows: S=0.

[Physiological and ecological effects of sulfur fertilization on soybean].

A pot experiment with 3 levels of elemental sulfur (0, 30, and 60 mg S x kg(-1)) showed that sulfur fertilization on soybean increased the side roots number by 8.6% - 33.2%, root dry weight by 6.

[Effects of elemental sulphur and dicyandiamide on mitigating NO3- -N leaching loss from vegetable soil].

In a pot experiment with allium as test plant and NH4HCO3 as nitrogen source, this paper studied the effects of element sulphur (S0) and dicyandiamide (DCD) on mitigating the NO3- -N leaching loss from soil and on soil inorganic nitrogen (NO3- -N and NH4+ -N) content. The results showed that within the 12 weeks of the experiment, the cumulative leaching loss of soil NO3- -N in treatments S0 + DCD and S0 was 83%-86% and 83% lower, while that of soil NH4+ -N was 16.8-21.