Digital image technology based on PCA and SVM for detection and recognition of foreign bodies in lyophilized powder.

Background: Digital image technology has made great progress in the field of foreign body detection and classification, which is of great help to drug purity extraction and impurity analysis and classification.

Objective: The detection and classification of foreign bodies in lyophilized powder are important. The method which can obtain a higher accuracy of recognition needs to be proposed.

Erenumab safety and efficacy in migraine: A systematic review and meta-analysis of randomized clinical trials.

Background: Erenumab is a new medicine recently approved in the United States of America for the preventive treatment of migraine among adults. We aimed to conduct a meta-analysis and evaluation of the efficacy and safety of erenumab among patients with migraine.

Methods: The electronic databases that were searched comprised PubMed, Embase and the Cochrane library, which were independently retrieved by 2 reviewers.

The protective effect of caffeic acid on global cerebral ischemia-reperfusion injury in rats.

Ischemic stroke is a major cause of death and disability all over the world. Ischemic stroke results from a temporary or permanent reduction of cerebral blood flow that leads to functional and structural damage in different brain regions. Despite decades of intense research, the beneficial treatment of stroke remains limited.

Time course change of COX2-PGI2/TXA2 following global cerebral ischemia reperfusion injury in rat hippocampus.

Background: Neuroinflammation plays pivotal roles in the progression of cerebral ischemia injury. Prostaglandins (PGs) as the major inflammatory mediators in the brain participate in the pathophysiological processes of cerebral ischemia injury. Cyclooxygenase-2 (COX2) is the rate-limiting enzyme of PGs, and thus it is necessary to characterize of the expression patterns of COX2 and its downstream products at the same time in a cerebral ischemia/reperfusion (I/R) model.

[Kinetics model for photo-catalytic degradation of Rodamine B with TiO2 /SiO2 as catalyst].

A novel photo-catalytic reactor of three-phase internal circulation fluidized bed was employed to the photodegradation of Rhodamine B with TiO2/SiO2 carried on porous silica as photocatalyst. The degradation kinetics of Rodaming B is investigated in the reactor. It is found that the degradation of Rodaming B conform hyperbola model, the reciprocal of degradation rate 1/X is proportional to the reciprocal of time 1/t.

[Radiation transformation mechanism in a photocatalytic reactor of three-phase internal circulating fluidized bed].

A novel three-phase internal circulating fluidized bed photocatalytic reactor was established and the radiation transformation in which was investigated. The experimental results indicate that with the interaction of gas and solid (gas flux > 0.3m3/h), the radiation transformation in the reactor along radial direction conforms to a definite exponential function, which agrees to formula Rose about the rules of light intensity distribution through evenly suspended particles.