Immobilization of metal(loid)s in hydrochars produced from digested swine and dairy manures.

Anaerobic digestion technology is widely used for treatment of swine and dairy manures in livestock farms, but the digested swine and dairy manures (SD-S, SD-D) must be properly disposed. In this study, hydrothermal carbonization (HTC) was used to deal with SD-S and SD-D. The resulting hydrochars (HC-S and HC-D) were investigated for the migration, speciation and potential environmental risk of metal(loid)s therein.

Assessment of vegetation establishment on tailings dam at an iron ore mining site of suburban Beijing, China, 7 years after reclamation with contrasting site treatment methods.

Strip-mining operations greatly disturb soil, vegetation and landscape elements, causing many ecological and environmental problems. Establishment of vegetation is a critical step in achieving the goal of ecosystem restoration in mining areas. At the Shouyun Iron Ore Mine in suburban Beijing, China, we investigated selective vegetation and soil traits on a tailings dam 7 years after site treatments with three contrasting approaches: (1) soil covering (designated as SC), (2) application of a straw mat, known as "vegetation carpet", which contains prescribed plant seed mix and water retaining agent (designated as VC), on top of sand piles, and (3) combination of soil covering and application of vegetation carpet (designated as SC+VC).

[Diabetes counteracts the protective effect of the diazoxide preconditioning on ischemic reperfused rat heart].

Objective: To explore the impact of diabetic condition on the protective effect of diazoxide preconditioning (DPC) on ischemic-reperfused (I/R) myocardium in rats.

Methods: Thirty normal male Sprague-Dawley rats were divided into 3 groups, including non-diabetic control group, non-diabetic I/R group, and non-diabetic I/R DPC group. Thirty diabetic male rats were also divided into the same 3 groups.

[Protective effect of ischemia and diazoxide preconditioning on postischemic reperfused myocardium and possible mechanism thereof].

Objective: To study the protective mechanism of ischemic preconditioning (IPC) and diazoxide preconditioning (DPC) against myocardium ischemia-reperfusion (I/R) injury.

Methods: The hearts were taken out from 30 male Wistar rats and were divided randomly into 3 equal groups: I/R group undergoing 30-min equilibration perfusion and 30-min ischemia and then 60-min reperfusion, IPC group undergoing 10-min equilibration perfusion and then two cycles of 5 min ischemia interspersed with 5 min reperfusion prior to 30 min ischemia and a 60-min reperfusion, and DPC group undergoing 10-min equilibration perfusion and 2 cycles of 5 min of 100 microM diazoxide perfusion followed by 5-min drug-free period before the 30 min ischemia and 60-min reperfusion. Frozen sections of myocardium at the cardiac apex were made and immunohistochemical staining was used to detect the expression of peroxisome proliferator-activated receptor-gamma coactivator 1alpha (PGC-1alpha).

[Clinical analysis for 232 cases of primary heart neoplasms].

Objective: To summarize the clinical characterizations and outcome of surgical treatment of primary heart neoplasms.

Methods: The clinical data of cardiac neoplasms were analyzed retrospectively in 232 patients. There were 14 malignant tumors (6.