This article summarizes the bleaching of pulp by white-rot fungus, including the type of white-rot fungus, the type of pulp, the equipment used to bleach by white-rot fungus, and some problems and prospect in practical application by white-rot fungus.

In the paper, we introduce the studies on some abnormal points in static magnetic field,find out the causes and mean while, give the methods of exclusion, thus the adjustment of MRI can be made perfectly.

Objective To examine the composition and distribution of animal reservoir of plague in Quanzhou city, Fujian province, and so as to accumulate basic data for making the plague prevention and control measures. Methods Rodents were captured by cages in six monitoring spots of Quanzhou city between 2000 and 2009. Then rodents and flea species were identified. Rats liver and spleen homogenates were detected of plague F1 antigen by reverse indirect hemagglutination test (RIHA); rats serum were detected of plague F1 antibody by indirect hemagglutination test (IHA). ResultsA total of 26 264 rodents were captured between 2000 and 2009.Rattus norvegicus and Rattus flavipectus were dominant species, which were accounted for 45.97％ (12 074/26 264)and 32.01％(8407/26 264), respectively. The account of Rattus flavipectus captured between 2005 and 2009 was (26.99 ± 2.46)％ and (37.03 ± 3.79)％ between 2000 and 2004. The difference was statistically significant (t =4.97, P ＜ 0.05). Total rodent densities was (6.86 ± 1.44)％, including(5.36 ± 1.83)％ in mountains and (6.81 ±1.66)％ in coastal areas, respectively, and the difference was not statistically significant(t =1.01, P ＞ 0.05). Total flea index and flea infection rate of rodents were 1.39 ± 0.34 and (35.90 ± 5.34)％, respectively. Xenopsylla Cheopis index was 1.20 and free flea index was 0.009. Flea infection rate was (32.36 ± 0.96)％ between 2005 and 2009, which was lower than (39.44 ± 0.39)％ between 2000 and 2004(t =2.76, P ＜ 0.05). ConclusionsThe major rodent species found in Quanzhou city is Rattus norvegicus. Xenopsylla Cheopis is the dominant flea species.Spreading of plague among Rattus is not found.

Objective To explore the effects and safety of hemoperfusion(HP) therapy on tetramine poisoning in infants.Methods Thirty-five infants with tetramine poisoning were divided into two groups: HP group(n=18) and non HP group(n=17).The changes of blood tetramine concentration and clinical symptom improving of both groups after the treatment were observed together with the adverse effects of HP group.Results The average blood tetramine concentration of HP group was higher than that of non HP group(342.2?333.4 vs 117.9?50.8 ?g/L,P

Objective To improve the conventional method of quantitative assessment of regional cerebral blood flows(rCBF)by a perfusion CT study based on maximal slope model at the general infusion rate(

The objective of this study was to investigate the effect of different rehydration conditions on recovery of the lyophilized red blood cells (RBC) so as to optimize the RBC rehydration. The different conditions, including different rehydration solution, the rehydration temperature, volume change rate of the lyophilized RBC rehydrated by the vapor firstly, were studied, the recovery rate and change of physiological and biochemical properties of the rehydrated RBC were detected. The results indicated that the solution of 10% (w/v) PVP40 in PBS showed the best effect, and the RBC recovery rate increased with increasing of rehydration temperature, and the optimal temperature of rehydration was at 37 degrees C. Pre-rehydration in condition of vapor could raise the RBC recovery rate, and promote the MCV and RDW to close to index of the fresh RBC, the deformability of the rehydrated RBC was no serious as compared with RBC preserved in conventional condition, but the activity level of ATP, G-6-PD, SOD, 2, 3-DPG of the rehydrated RBC less decreased. It is concluded that the optimal rehydration conditions for lyophilized RBC are pre-rehydration in the 37 degrees C with vapor firstly, PBS + 10% (w/v) PVP40 rehydration solution and rehydration temperature at 37 degrees C, but the protection of RBC membrane needs to be furtherly studied.
Blood Preservation ; methods ; Erythrocyte Count ; Erythrocytes ; Freeze Drying ; methods ; Humans ; Rehydration Solutions ; Temperature

OBJECTIVETo test the hypothesis that delayed X-irradiation can enhance the functional and structural recovery of the injured spinal cord in rats.

METHODSSeventy Sprague-Dawley rats were randomly divided into two groups, 35 rats in each. The control group sustained a one-minute clip compression (force of clip was 30 g) injury of the spinal cord at the T2 level, without X-irradiation. The experimental group received X-irradiation 14 days after injury. Neurological function was assessed by the modified Tarlov method, including hind limbs movement, inclined plane, and pain withdrawal. These tests were performed in a blinded fashion at 3, 7, 14, 21, 28, 35, and 42 days after injury. At 43 days after injury, histological examination of the injured spinal cord was performed following decapitation of the rats.

RESULTSSixty-two rats met the experimental requirements (spinal cord injury was similar), 32 rats in experimental group and 30 rats in control group. Statistically significant difference was observed between the two groups in hind limbs movement and inclined plane (P < 0.01), but not in the pain withdrawal test. The edema and necrosis areas of injured spinal cords in experimental group were less than those in control group, and axons in experimental group were significantly more than those in control group (P < 0.01).

CONCLUSIONDelayed X-irradiation following spinal cord injury may enhance functional recovery by improving and restoring structural integrity of the injured spinal cord in rats.

Animals ; Axons ; physiology ; radiation effects ; Hindlimb ; Joints ; physiology ; Motor Activity ; Movement ; Radiotherapy ; methods ; Rats ; Rats, Sprague-Dawley ; Spinal Cord ; physiopathology ; radiation effects ; Spinal Cord Injuries ; radiotherapy ; rehabilitation ; Weight-Bearing ; X-Rays

OBJECTIVETo study the mechanism of Ca(2+) on the apoptosis induced by hyperthermia in neonate rat hippocampal neurons to provide the applicative evidence of dantrolene for preventing brain injuries.

METHODSDantrolene, Ca(2+) specific blocking agent, was used in the hyperthermia-induced apoptosis of primary hippocampal neurons in vitro to observe its effect on the apoptosis, fluorescent intensity, and dynamic change of Ca(2+) by flowcytometry and laser confocal microscopy.

RESULTSThe rate of apoptosis was decreased significantly after hyperthermia treatment by dantrolene sodium. The intracellular Ca(2+) fluorescent intensity in 42 degrees C treatment group (107.35 +/- 6.0) was significantly lower than that in control group (159.12 +/- 33.8). The concentration of Ca(2+) began to decrease 20 approximately 25 s after adding dantrolene sodium, and reached the lowest level about 50 s later, and then kept lower than the basal level.

CONCLUSIONDantrolene sodium has an important protective effect on hippocampal neurons apoptosis induced by hyperthermia and may have some applicative value of preventing heat-induced brain injury.

Animals ; Animals, Newborn ; Apoptosis ; drug effects ; Calcium ; metabolism ; Calcium Channel Blockers ; pharmacology ; Cells, Cultured ; Dantrolene ; pharmacology ; Female ; Hippocampus ; cytology ; drug effects ; Male ; Neurons ; drug effects ; metabolism ; Rats ; Rats, Sprague-Dawley ; Temperature

This study was aimed to explore the correlation of hemogram changes during pregnancy of healthy women with postpartum blood transfusion. The outpatient and inpatient information of expectant lying-in women in our hospitals was collected, the route blood test, lever and kidney function and blood coagulation function tests were performed from the 4th to the 10th month of pregnancy. The pregnant women without underlying diseases and non-elderly pregnant women with single fetus were selected as the subjects of study. They were divided into postpartum blood transfusion group and non-blood transfusion group. The white blood cell (WBC) count, hemoglobin (Hb) level, platelet (Plt) count, plateletocrit (PCT), mean platelet volume (MPV), platelet distribution width (PDW) were compared in 2 groups. The results showed that 68 cases out of 450 expectant lying-in women received blood transfusion, among them 30 cases with complete data of puerperal transfusion were taken as blood transfusion group, the 28 cases of non transfusion puerperal as control group. There was no significant difference of hemogram changes between the two groups. However, there was a slight decline in Plt count and Hb level of late pregnant women. What is more, there was no correlation between Plt count change and the PCT, MPV and PDW. It is concluded that the changes of hemogram during pregnancy has no correlation with postpartum hemorrhage and blood transfusion in healthy pregnant women, the Plt count and Hb level of pregnant women slightly decline. Nevertheless, PCT, MPV and PDW are within the normal range.
Adult ; Blood Cell Count ; Blood Transfusion ; Erythrocytes ; Female ; Humans ; Leukocyte Count ; Middle Aged ; Platelet Count ; Postpartum Period ; Pregnancy ; blood ; Pregnancy Trimester, Second ; Pregnancy Trimester, Third ; Reference Values ; Young Adult

Objective To assess the laparoscopic technique combined with open surgical technique in pyeloplasty.Methods Overall,45 patients with ureteropelvic junction obstruction underwent laparo- scopic dissection of the renal pelvis and upper ureter transperitoneally,and pyeloplasty was performed through a expanded trocar-incision(extension of 1-2 cm)as open surgery was performed.Results The opera- tion was successful in all 45 patients.The mean operative time was 58 min(range,40-85 min),and the mean blood loss was 22 ml(range,15-30 ml).No complication was observed during and after operation. Follow-up for 3-36 months was available in 34 patients.Intravenous urography(IVU)showed no obstruc- tion of the anastomotic stoma,and B-ultrasound indicated relief of hydronephrosis.Conclusions Laparo- scopic approach combined with open surgery in pyeloplasty is an effective way to treat ureteropelvic junction obstruction.This technique can simplify the operative manipulation and shorten the operative time without more trauma to the patients.It is worth general application in clinical practice.