The speckle noise is considered one of the main causes of degradation in ultrasound image quality. Many despeckling filters have been proposed, which are always making a trade-off between noise suppression and loss of information. A class of despeckling methods based Non-Local Means (NLM) algorithm is known to efficiently preserve the edges and all fine details of an image while reducing the noise. The core idea of NLM filter is to estimate the denoised pixel by performing a weighted average of ...

Biotechnology  Bioengineering 

Traumatic Brain Injuries (TBI’s) are any disorder in a brain’s functionality that can be caused by numerous reasons, including motor-vehicle crashes, falls, and assaults. Impractical in-vivo head injury experiments compel bio- engineers to develop a robust, accurate, and efficient computer model. In this study, bovine brain samples were tested under a confined compression testing machine. Consequently, the result from unconfined compression tests, at quasi-static strain rates of ε=0.0004...

Applications of Communication Systems  Anatomy & Physiology  Bioengineering 

Wnt5a is a representative protein ligand that activates a beta catenin independent pathway in Wnt signaling in cancer progression and spread in the palmitoylated form. So that its synthesis is augmented through promotion of its gene transcription in the malignant cells. Cisplatin is an important chemotherapeutic drug used in treatment of different types of advanced cancer. However, its usage is limited due to severe dose-limiting side effects, due to the lack of targeting therapy of cisplatin. O...

Biotechnology  Biochemistry  Bioengineering 

Alpha-amylase is a starch hydrolyzing enzyme which has many industrial applications. In this study, Bacillus subtilis QM3 has ability to produce α-amylase. Identification was done by iodine test, based on the clear zone around the sample in starch agar plates. Alpha-amylase activity was measured using 3,5-dinitrosalicylic acid (DNS). The result showed B. subtilis QM3 can produce α-amylase and activity of α-amylase was 50.58 IU/mL. The study on enzymatic properties was found: the optimum temperat...

Microbiology  Bioengineering 

The negatively charged coordination groups on the structure of these biomolecules, which is the main components of extracellular polymeric substances (EPS), have good adsorption efficiency for heavy metals. In this paper, EPS form Proteiniphilum acetatigenes PSB-W which was extracted by EDTA method, and the effects of pH, EPS dosage, adsorption time and initial metal concentration on the adsorption regularity of Cu2 and Pb2 ions on EPS structure were studied respectively, as well as the adsorp...

Microbiology  Bioengineering  Environmental Sciences 

In order to obtain the optimal conditions for the degradation of phenol by Pseudomonas stutzeri ZH-1, based on the single factor experiment, the Box Behnken design test of Response Surface Method was used. Four variables of glucose concentration (0.4, 0.6, 0.8 g/L), inoculation concentration (3%, 5%, 7%), pH (6, 7, 8) and temperature (35°C, 37.5°C, 40°C) were used to identify the significant effects and interactions in the batch studies. A second order polynomial regression mo...

Biochemistry  Bioengineering 

The article discusses the characteristics of the fractality of heart rate variability represented by a time series. An algorithm for calculating the Hurst exponent is presented, which allows one to evaluate the degree of chaotization of the signal in question. The capabilities of various multifractal analysis programs are shown, which require the use of different mathematical models.

Computational Biology  Bioengineering 

Wheat straw is an ideal green renewable resource, which is widely used as fertilizers, feedstuffs, edible funguses, industrial raw materials and fuels. Hydrothermal liquefaction of biomass that works under normal or slightly pressurized conditions results in higher oil quality. We summarize the technical principles of hydrothermal liquefaction, analyze the difficulties and problems in the utilization of various technologies, and put forward the development trend of promoting the application of b...

Agricultural Science  Biochemistry  Bioengineering 

Photosynthetic bacteria (PSB) wastewater treatment is a new method with great resource recovery potential. In order to improve the biomass and valuable resources of bacteria in the wastewater treatment of photosynthetic bacteria, the effects of different light conditions on the efficiency of Proteiniphilum acetatigenes PSB-W in the treatment of sugar wastewater and the production of bacteria and carotenoids in the wastewater were analyzed from three aspects of light source, light intensity and l...

Biochemistry  Bioengineering 

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Biotechnology  Microbiology  Bioengineering