The relation between the critical radius and the particle size distribution for generalized Ostwald type ripening processes whereby the mass transfer coefficient is modelled by a power law was derived. The critical radius is determined by the growth rate, the mass transfer coefficient and the mass balance, and is independent of whether the limiting stationary growth regime has been obtained.
Computer Simulation ; Crystallization ; methods ; Macromolecular Substances ; analysis ; chemistry ; Models, Chemical ; Models, Molecular ; Molecular Conformation ; Particle Size

Diagnostic Errors ; Encephalocele ; diagnosis ; Female ; Humans ; Meningocele ; diagnosis ; Middle Aged ; Mucocele ; diagnosis ; Sphenoid Sinus ; pathology

Adult ; Balloon Occlusion ; instrumentation ; Cardiac Catheterization ; instrumentation ; Ductus Arteriosus, Patent ; surgery ; Female ; Humans ; Ligation ; instrumentation ; Recurrence

Objective To explore the clinical effect of posterior indirect reduction and internal fixation and laminectomy in the treatment of thoracolumbar vertebrae burst fracture complicated with spinal cord injury.Methods Eighty patients with thoracolumbar vertebrae burst fracture and spinal cord injury treated in our hospital from March 2014 to March 2015 were selected as the objects,and they were divided into reset group and laminectomy group with forty cases in each group according to surgical method.All the patients were followed up for 1 year,the lumbar function of two groups at 1 week and 1 year after operation were observed respectively,and the pain degree was observed in 1month,3 months and 6 months after operation.The amount of bleeding,operation time,hospitalization time and fracture healing time were observed.Neurological function was assessed by classification criteria of the American Spinal Cord Injury Association(ASIA),and incidence of complications was figured in the two groups.Results The anterior heights of the injured vertebra were higher than those before the operation,and the Cobb's angles were lower than those before the operation,the differences were significant(P ＜ 0.05);while there was no significant differences in the anterior heights of the injured vertebra between the two groups at 1 week and 1 year after operation(P ＞ 0.05).VAS scores of the two groups after 1 month,3 months and 6 months decreased significantly when compared with the preoperative scores(P ＜ 0.05),and VAS scores of each time in the reset group were significantly lower than those in the laminectomy group(P ＜ 0.05).The amount of bleeding,operation time,hospitalization time and fracture healing time in the reset group were less than those in the laminectomy group (P ＜ 0.05).The neurological function recovery of the two groups were significantly improved when compared with that before the operation(P ＜0.05).There was no significant difference in recovery of neurological function between the two groups(P ＞ 0.05).The complication rate was 7.50％ in the reset group,lower than 12.50％ of the laminectomy group,the difference was significant (P ＜ 0.05).Conclusion Posterior indirect reduction and internal fixation of lamina both have a certain effect in the treatment of thoracolumbar vertebrae burst fracture complicated with spinal cord injury.But posterior indirect reduction has less complications and less amount of bleeding,which is beneficial to postoperative recovery.

OBJECTIVETo explore effective approaches of treating elderly patients with distal tibiofibular fractures.

METHODSFrom August 2008 to October 2012,175 elderly patients with distal tibiofibular fractures were treated with locking compression plate (LCP) through anterior tibial. There were 112 males and 63 females with an average of 71.3 (ranged 60 to 83) years old. Of them,89 cases were treated by anterior tibial tension reduced incision with LCP,including 62 males and 27 females with a mean age of (71.8 +/- 6.4) years old. Eighty-six patients were treated by distal tibial incision with LCP,including 58 males and 28 females with a mean age of (70.3 +/- 6.7) years old. Swelling time, operation time, intraoperative blood loss, hospital stay, healing time, complications and AOFAS scores were compared between two groups after operation.

RESULTSSwelling time in anterior tension reduced incision with LCP and distal tibial incision with LCP was (5.6 +/- 1.3) and (9.7 +/- 2.1) days, healing time was (4.2 +/- 1.4) and (5.4 +/- 1.9) months,and complications were found 3 in tension reduced incision and 10 in distak tibial incision respectively;and all data shown statistically significant differences between two groups (P < 0.05). At 12 months after operation,AOFAS score was 89.0 +/- 9.7, 87.9 +/- 9.4; and there was no statistically significant difference between two groups (P > 0.05).

CONCLUSIONTension reduced incision through anterior tibial combined with locking compression plate fixation in treating elderly patients with distal tibiofibular fractures can provide good clinical effects with quick fracture healing and low complications.

Adult ; Aged ; Aged, 80 and over ; Bone Plates ; Female ; Fibula ; injuries ; surgery ; Fracture Fixation, Internal ; instrumentation ; methods ; Humans ; Male ; Middle Aged ; Minimally Invasive Surgical Procedures ; Tibia ; injuries ; surgery ; Tibial Fractures ; surgery ; Treatment Outcome

The DNA damage response is critical for cells to maintain genome stability and survival. In this review, we discuss approaches to targeting critical elements of the DNA damage response for radiosensitization and chemosensitization. In addition, we also discuss strategies for targeting DNA damage response and DNA repair defects in cancer cells for synthetic lethality.
Antineoplastic Agents ; therapeutic use ; Cell Death ; DNA Damage ; genetics ; DNA Repair ; genetics ; Dose-Response Relationship, Radiation ; Drug Resistance, Neoplasm ; Genomic Instability ; Humans ; Neoplasms ; drug therapy ; genetics ; pathology ; radiotherapy ; Poly(ADP-ribose) Polymerase Inhibitors ; Poly(ADP-ribose) Polymerases ; pharmacology ; Radiation Dosage

AlM:To evaluate the expression of transcriptional factor lslet-1 in retina in experimental retinal neovascularization induced by oxygen.
METHODS: The murine retinal neovascularization were induced by hyperoxia exposure. The morphological observation of retinal neovascularization was performed using angiography by fluorescein dextran injection under the fluorescence microscope, and the new blood vessels were quantified after 5d in room air (17-day-old) by counting the vascular epithelial cell nuclei protruding into viteous cavity using HE stain. Realtime PCR and Western blot were used to examine retinal lslet-1 level in postnatal 7,12, 14,17 and 26d respectively.
RESULTS: A lots of new blood vessels were demonstrated in the mouse retina in hyperoxic group by fluorescein angiography and histological method. Moreover, no significant difference was found in retinal lslet-1 level in postnatal 7d between hyperoxic group and control group, but was significantly higher in postnatal 12, 14 and 17d mice compared with control mice. However, mice at postnatal 26d, expression of lslet-1 in retina decreased to normal level.
CONCLUSlON: ln processing mouse model of retinal neovascularization, sustained hypoxia retinal tissue induce retinal neovascularization by increas the expression of transcription factor lslet-1.

Objective To investigate the perioperative hemodynamic features of mitral replacement of patients with small left ventricle.Methods Patients with left ventricle end-diastolic dimension (LVEDD) less than 40mm received mitral replacement sur- gery were divided into big size M-2 group and small size M-1 group.The perioperative echo results were analyzed with SPSS software. Results The big size M-2 group has lower trans mitral gradient [ (5.9?1.6) mm Hg vs.(10.7?3.2) mm Hg],larger in vivo va- lular acre[ (2.9?0.2) cm~2 vs.(2.6?0.2) cm~2],and high mitral match index [(1.92?0.23) cm~2/m~2 vs.(1.73?0.18) cm~2/m~2 ].Conclusion With the meticulous perioperative treatment and myocardial protection,the patients with small left ventricle should also receive a mitral replacement as big as possible to achieve the ideal hemodynamics results.

OBJECTIVE: To develop a five fluorescence-labeled multiplex amplification system for 15 loci and study genetic polymorphism in Xinjiang Uygur population. METHODS: The STR loci were screened. The alleles were named according to the number of repeats by sequencing. The sensitivity, species specificity, identity and stability of the five fluorescence-labeled multiplex amplification system for the 15 loci were all tested. Then, the genetic polymorphism was analyzed in Xinjiang Uygur population and compared with other ethnic groups including Xizang Tibetan, Xiuyan Manchu, and Guangzhou Han population. RESULTS: The 15 loci multiplex amplification system was established. The sensitivity was 0.3 ng with good species specificity, identity and stability. The distributions of genotype for 13 STR loci in Uygur population were in accordance with Hardy-Weinberg equilibrium with no genetic linkage between these loci. Most loci showed statistically significant among different populations. CONCLUSION The established system has application value in forensic evidence. The 13 STR loci in Uygur population have
Alleles ; Ethnicity/genetics* ; Gene Frequency ; Genetic Linkage ; Genotype ; Humans ; Multiplex Polymerase Chain Reaction/methods* ; Polymorphism, Genetic

Based on the structure and function of acupoint and in association of the definition and principle of sensor, the acupoint is the sensitive element, being sensitive to the physical stimulation with acupuncture and moxibustion and sensitively responded to the disorders; the acupoint is the sensing element, transforming the changes of the acupoint information via the complicated internet conduction, integration and regulation, so as to generate the effects on organic body; the acupoint is the conversion element, transforming every irritation into the bioelectric signal or optical signal so that the organic body could recognize it. Therefore, the acupoint is regarded as the sensor of information in the organic body.
Acupuncture Points ; Electrophysiological Phenomena ; Humans ; Meridians