Evaluation on the phenotypic diversity of Calamansi (Citrus microcarpa) germplasm in Hainan island.

Calamansi or Philippine lime (Citrofortunella macrocarpa) is an important crop for local economic in Hainan Island. There is no study about Calamansi germplasm evaluation and cultivar development. In this study, Calamansi data were collected from 151 of Calamansi seedling trees, and 37 phenotypic traits were analyzed to investigate their genetic diversities.

A Pose-Only Solution to Visual Reconstruction and Navigation.

Visual navigation and three-dimensional (3D) scene reconstruction are essential for robotics to interact with the surrounding environment. Large-scale scenarios and computational robustness are great challenges facing the research community to achieve this goal. This paper raises a pose-only imaging geometry representation and algorithms that might help solve these challenges.

Metabolic Engineering of Aspartic Acid Supply Modules for Enhanced Production of Bacitracin in .

Bacitracin, a type of cyclic dodecapeptide antibiotic mainly produced by , is widely used in fields of veterinary drug and feed additive. Modularization of metabolic pathways based on the concept of synthetic biology has been widely used in the efficient synthesis of target products. Here, we want to improve bacitracin production through strengthening aspartic acid (Asp) supply in DW2.

SE(n)++: An Efficient Solution to Multiple Pose Estimation Problems.

In robotic applications, many pose problems involve solving the homogeneous transformation based on the special Euclidean group SE(n) . However, due to the nonconvexity of SE(n) , many of these solvers treat rotation and translation separately, and the computational efficiency is still unsatisfactory. A new technique called the SE(n)++ is proposed in this article that exploits a novel mapping from SE(n) to SO(n + 1) .

Dual MIMU Pedestrian Navigation by Inequality Constraint Kalman Filtering.

The foot-mounted inertial navigation system is an important method of pedestrian navigation as it, in principle, does not rely any external assistance. A real-time range decomposition constraint method is proposed in this paper to combine the information of dual foot-mounted inertial navigation systems. It is well known that low-cost inertial pedestrian navigation aided with both ZUPT (zero velocity update) and the range decomposition constraint performs better than those in their own respective methods.

Coproduction of xylose, lignosulfonate and ethanol from wheat straw.

A novel integrated process to coproduce xylose, lignosulfonate and ethanol from wheat straw was investigated. Firstly, wheat straw was treated by dilute sulfuric acid and xylose was recovered from its hydrolyzate. Its optimal conditions were 1.

The methodology and pharmacokinetics study of intraventricular administration of vancomycin in patients with intracranial infections after craniotomy.

Objective: The purpose of the study was to investigate the pharmacokinetics of combined intravenous (i.v.) and intracerebroventricular (i.

Improved iterative calibration for triaxial accelerometers based on the optimal observation.

This paper presents an improved iterative nonlinear calibration method in the gravitational field for both low-grade and high-grade triaxial accelerometers. This calibration method assumes the probability density function of a Gaussian distribution for the raw outputs of triaxial accelerometers. A nonlinear criterion function is derived as the maximum likelihood estimation for the calibration parameters and inclination vectors, which is solved by the iterative estimation.

Revealing the essentiality of multiple archaeal pcna genes using a mutant propagation assay based on an improved knockout method.

Organisms belonging to the Crenarchaeota lineage contain three proliferating cell nuclear antigen (PCNA) subunits, while those in the Euryarchaeota have only one, as for Eukarya. To study the mechanism of archaeal sliding clamps, we sought to generate knockouts for each pcna gene in Sulfolobus islandicus, a hyperthermophilic crenarchaeon, but failed with two conventional knockout methods. Then, a new knockout scheme, known as marker insertion and target gene deletion (MID), was developed, with which transformants were obtained for each pMID-pcna plasmid.

Efficient expression of codon-adapted human acetaldehyde dehydrogenase 2 cDNA with 6xHis tag in Pichia pastoris.

Human mitochondrial acetaldehyde dehydrogenase 2 (ALDH2) catalyzes the oxidation of acetaldehyde to acetic acid. Therefore, ALDH2 has therapeutic potential in detoxification of acetaldehyde. Furthermore, ALDH2 catalyzes nitroglycerin to nitrate and 1, 2-glyceryldinitrate during therapy for angina pectoris, myocardial infarction, and heart failure.

[Separation and purification of flavonoids from Smilax glabra by macroporous adsorption resin].

Objective: To investigate the process of separating and purifying flavonoids from Smilax glabra.

Method: With the yield of flavonoids as index, the optimum process of separating and purifying flavonoids from S. glabra Roxb was screened by static and dynamic adsorption tests.

[The optimum condition on baicalin extraction from Scutellaria baicalensis].

Objective: To optimize the extraction process of baicalin from Scutellaria Baicalensis Georgi with ethanol.

Methods: The extraction process of baicalin from Scutellaria Baicalensis Georgi was optimized with the aid of orthogonal experiments.

Results: The optimal parameters were obtained as follows: extracting temperature, extracting time, ethanol concentration and mechanical stirring speed were 80 degrees C, 1 h, 60% and 400 r/min, respectively.

The effect of microwave irradiation on enzymatic hydrolysis of rice straw.

A series of experiments involving microwave irradiation were carried out to evaluate the effect of microwave irradiation on enzymatic hydrolysis of rice straw. Compared with microwave irradiation free hydrolysis, rice straw pretreated by combining microwave irradiation with alkali could increase the initial hydrolysis rate but the hydrolysis yield remained unchanged. When the enzyme solution was treated by microwave irradiation, the initial hydrolysis rate increased slightly, but the yield was decreased remarkably.

Immobilization of Candida rugosa lipase on a pH-sensitive support for enantioselective hydrolysis of ketoprofen ester.

Candida rugosa lipase (Lipase OF) was immobilized by covalent binding to a pH-sensitive support showing reversibly soluble-insoluble characteristics with pH change. The immobilized lipase could carry out the enantioselective hydrolysis of ketoprofen ester in a soluble form yet be recovered after precipitation by simply adjusting pH. Its activity and enantioselectivity for hydrolysis of 2-chloroethyl ester of ketoprofen were enhanced 1.