AbstractZingiber densissimum S.Q.Tong & Y.M.Xia and Kaempferia laotica Gagnep., belong to the Zingiberaceae family, which were found in Vietnam Laos recent years. To date, there has been very limited information on their phytochemical profiles pharmacological activities. The present study was conducted give insights into chemical composition of essential oils isolated from two plants antimicrobial Gas Chromatographic–Mass Spectral (GC-MS) analysis utilized identify rhizome Z. K. laotica....

Biosimilars/biosimilar medicines have been developing rapidly, promising to bring many benefits in the diagnosis, treatment, prevention of diseases, and human health improvement. Biosimilar is a medicine that highly similar an already licensed biological product (reference medicine). Although there are some minor differences inactive ingredients, no clinically significant purity, potency, safety between two products. The development biosimilars challenging multistep process. Unlike "generic"...

In this paper, we showed a method to forecast the stock price using neural networks. Predicting market is very difficult since it depends on several known and unknown factors. recent years, one of techniques that have been used popularly in area artificial network. The power network its ability model nonlinear process without priori knowledge about nature process. We both feed forward simple recurrent network, trained by time profit based back propagation algorithm with early stopping make...

Abstract Cyclic stretch applied to cells induces the reorganization of stress fibers. However, correlation between fiber subtypes and strain-dependent responses cytoplasm nucleus has remained unclear. Here, we investigated dynamic involvement in orientation elongation cyclically stretched epithelial cells. We uniaxial cyclic stretches at 5%, 10%, 15% strains followed by release mechanical stretch. Dorsal, transverse arcs, peripheral fibers were mainly involved whereas perinuclear cap...

Conamomum vietnamense , a new species of Zingiberaceae family, has been discovered and described from Tay Nguyen (Central Highlands, Vietnam) in 2022. The present study the preparation essential oil leaves rhizomes plant by hydrodistillation process. Then, chemical composition these oils was analyzed Gas Chromatography-Mass Spectrometry (GC-MS), which indicated that limonene (18.74 26.20%) eucalyptol (40.47 49.49%) were main components, respectively. also showed moderate antimicrobial...

Evaluation of E-Learning resources plays a significant role in the context pedagogic systems. Resource evaluation is important both conventional ‘talk-and-chalk’ teaching and blended learning. In on-line (e-learning) [an enforced feature systems tertiary education during Covid-19 pandemic] effective has obtained importance given lack ‘face-to-face’ student-teached interaction. Moreover, use e-learning demonstrated effectiveness systems, which been argued learning Additionally, e-learning,...

Alpinia nelumboides Nob.Tanaka, T.T.K.Van & V.Hoang is the new Alpninia species discovered in Vietnam 2023. Herein, we first hydrodistillated its pseudo-stems and rhizomes to obtain essential oils, PS-EO RH-EO. Their volatile compounds total polyphenols were analysed by gas chromatography-mass spectrometry Folin-Ciocalteu method, respectively. Antioxidant activities determined using four different approaches. The results showed that RH-EO contained 40 31 compounds, accounting for 99.78%...

There is a growing demand for the consumption of medicinal mushrooms and their products. Ganoderma lucidum Cordyceps militaris are two important with significant pharmacological activities. In this study, we aim to develop preparation extracts these mushrooms, investigate its composition, antioxidant activities, protective effects against oxidative damage. Liquid chromatography equipped quadrupole time-of-flight mass spectrometry (LC-QTOF MS) was employed analyze chemical profiles mixture. A...

Data-free Knowledge Distillation (DFKD) has attracted attention recently thanks to its appealing capability of transferring knowledge from a teacher network student without using training data. The main idea is use generator synthesize data for the student. As gets updated, distribution synthetic will change. Such shift could be large if and are trained adversarially, causing forget it acquired at previous steps. To alleviate this problem, we propose simple yet effective method called...

Abstract Magnetic nanoparticles (MNPs) provide a fast, cost-effective, and organic-free method for DNA isolation. In this paper, we synthesized MNP coated with oleic acid (Fe 3 O 4 @OA) silica @OA@SiO 2 ), characterized the properties of using TEM, VSM, FTIR, investigated their efficiency in isolation from cyanobacteria. The yield quality isolated were evaluated compared those animal blood obtained by column or organic solvents. results showed successful preparations Fe @OA superparamagnetic...

AbstractThe Zingiber genus has been widely applied in food and pharmaceuticals due to its varied chemical composition significant benefits. plicatum Škorničk. & Q.B. Nguyễn was described Vietnam 2015, yet there no report on phytochemicals bioactivity. In this study, we first analyzed the of essential oil antioxidant activities. Isolation rhizome performed through hydrodistillation using a Clevenger apparatus for 3.5 h, then volatile compositions were determined gas chromatography-mass...

Abstract In this work, the volatile components of Erigeron sublyratus essential oils and their anti‐inflammatory cytotoxic activities were investigated for first time. Gas chromatography‐mass spectrometry (GC‐MS) analysis identified 28 in root aerial part oils. The main included cis ‐lachnophyllum ester (53.4–64.2 %), germacrene D (5.6–8.6 trans ‐β‐ocimene (2.6–7.5 β ‐caryophyllene (4.7–6.8 ‐myrcene (2.0–6.3 ( E )‐ ‐farnesene (4.8–5.0 %). oil inhibited nitric oxide (NO) production on...

Objective/Background The essential oils (EOs) of Curcuma species contain various volatile compounds with bioactivity. However, the phytochemical profile thorelii and antimicrobial activities rhabdota, petiolata have received limited attention. This study aims to characterize compare major EOs extracted from rhizomes C. thorelii, collected in Vietnam . Methods were obtained by hydrodistillation three species. chemical profiles determined using gas chromatography-mass spectrometry (GC-MS)....

Objective/Background: Zingiber monophyllum Gagnep., a member of the Zingiberaceae family, is known for its significant biological activities. The current study aimed to determine volatile components ethyl acetate (EtOAc) fractionated extract found in rhizomes this species. This first report on chemical composition and bioactivities Z. extract. Methods: constituents were analyzed determined using gas chromatography-mass spectrometry (GC-MS). Antioxidant activities evaluated by...

AbstractHedychium yunnanense Gagnep., belonging to the Zingiberaceae family, has aroused much interest due its non-volatile chemical constituents. Nevertheless, no data about essential oils (EOs) of this species is available. In study, composition and antimicrobial activity EOs from leaves rhizomes H. collected in Vietnam were analyzed. The obtained as yellow with extraction yields 0.21 0.09%, respectively. Fifty-seven components, accounting for 94.35-98.92%, identified two EOs. EO mainly...

In this paper we present a speech enhancement method in highly non-stationary noise environments based on modified Improved Minimal Controlled Recursive Averaging (IMCRA) and Optimal Modified Minimum Mean-Square Error Log-Spectral Amplitude (OMLSA) method. The original OMLSA method, the spectral gain function, which minimizes mean-square error of log-spectral amplitude, is obtained as weighted geometric mean hypothetical associated with presence uncertainty. Whereas IMCRA estimation given by...

The aim of the present study was to determine phenolics, carotenoids, B-vitamins, and antioxidant activity nuts seeds grown in Vietnam. concentrations carotenoids B-vitamins may vary among seeds. Watermelon seed contained highest level lutein while pumpkin β-carotene richest sample. Sachi inchi sunflower comprised considerable levels vitamin B1, B6, B9. phenolic analysis revealed that cashew total amount flavonoids (466.04 μg/g), with catechin, epicatechin, procyanidin B2 predominating over...

Objective/Background: Camellia longii Orel and Luu was discovered for the first time in Cat Tien National Park of Lam Dong Province, Southern Vietnam, determined as a new species. To best our knowledge, this is report on phytochemical bioactivity Methods: The chemical profile essential oil (EO) prepared from C. flowers by GC/MS analysis comparison recorded retention indices corresponding literature values. total phenolic flavonoid contents different flower extracts were estimated...

This study on the mentioned machine is to intend peel seed coat of dried soybean that applies friction principles between and conveyor belt. Creating largely frictional contact surface soybeans leads broken link which responsible for peeling away from completely. work demonstrates design parameters fabrication method including number rotations two conveyors, distance soybeans. The recommended values after studying are carried out as following: revolution 120 rpm, gap bean 6 mm belt width 400...

In this paper, we describe a speech enhancement approach for robust recognition. This consists of two stages to solve both current problems recognition: reverberation and noise. Firstly, signal is dereveberated by suppression slowly -- varying components the falling edge power envelope (SSF). Then binaural processing applied remove noise from target speech. Speech recognition results show that combination algorithm provides good robustness in real environments.