369Fabrication of 3D gel-printed β-tricalcium phosphate/titanium dioxide porous scaffolds for cancellous bone tissue engineering.

Human bone is composed of cortical bone and cancellous bone. The interior portion of natural bone is cancellous with a porosity of 50%-90%, but the outer layer is made of dense cortical bone, of which porosity was not higher than 10%. Porous ceramics were expected to be research hotspot in bone tissue engineering by virtue of their similarity to the mineral constituent and physiological structure of human bone.

High prevalence of obesity-related hypertension among adults aged 40 to 79 years in Southwest China.

This study aimed to assess the prevalence and related factors of obesity-related hypertension among adults aged 40 to 79 years in Southwest China. From September 2013 to March 2014, a multi-stage, stratified sampling method was conducted on 10,589 people aged 40 to 79 years and living in Chengdu and Chongqing investigated by using a questionnaire and performing physical and biochemical measurements. The prevalence of obesity-related hypertension and hypertension overall (systolic ≥130 mmHg and/or diastolic ≥80 mmHg or treated hypertension) was 22.

[Quality control examination on testing pesticides residues in food for agencies in charge of food safety risk monitoring and inspection].

Objective: To find out the proficiency of professionals in monitoring and inspection agencies on the determination of pesticides residue in food, and to improve the accuracy and comparability of testing results.

Methods: Three sets of quality control samples with the same matrix but different in concentrations of pesticides were prepared; one of blind quality control samples contained chlorpyrifos, methyl parathion, methyl pirimiphos, fenitrothion or triazophos and bifenthrin was dispatched to each inspection agency. Criteria for testing results were evaluated by Z scores: [Z] = < or = 2 for satisfactory; 2 < [Z] < 3 for uncertainty and [Z] > or = 3 for unsatisfactory.

[Rapid analysis of L-carnitine in health food by high performance anion exchange chromatography with pulsed amperometric detector].

Objective: A pulsed amperometric detector-high performance anion chromatography method for the determination of L-carnitine in health food was established.

Methods: After samples were dissolved and dispersed with ether, L-carnitine in samples was extracted with 0. 1 mmol/L HC1.

[Determination of histatins 5 in salivary by reversed-phase high performance liquid chromatography method with ultraviolet detection].

Objective: The determination method of histatins 5 in human saliva with reversed-phase high performance liquid chromatography (HPLC) was developed.

Methods: Salivary samples were collected and diluted with phosphate buffer (pH 2.5).