scholarly journals Same useful fixative from resin in Vietnam

2021 ◽  
Vol 10 (3) ◽  
pp. 088-094
Author(s):  
Le Huy Hai ◽  
Le Mai Xuan Truc ◽  
Nguyen Quoc Trung
Keyword(s):  
Raw Materials ◽  
Natural Resin ◽  
Volatile Solvents ◽  
Canarium Album ◽  
Agarwood Resin ◽  
Effective Use ◽  
Method Of Assessment ◽  
Aquilaria Crassna ◽  
Over Time ◽  
Better Than

Today, fixatives from natural raw materials are gradually replacing fixatives synthesized from chemicals. The arm of this research is the study of same useful resin in Vietnam for fixative substance in blending fragrance. We obtained Benzoin resin from Styrax tonkenensis Pierre plant in Ha Giang province, Canarium resin from Canarium Album L. in Dak Nong district, Dak Lak province, and Agarwood pulp of Aquilaria crassna plant in Binh Thuan province Vietnam. The material used in the experiment for the natural fragrance was taken from the project of Vietnam essential oils and related natural products. The method of this process is resin extraction by volatile solvents. The resin is dissolved in alcohol 96% and the distilled alcohol is removed to obtain absolute. The method of assessment of product quality in this study is using the olfactory to assess the odour of samples over time. Benzoin resin, Canarium resin, and Agarwood resin of Vietnam are useful fixatives in blending fragrance. The fixative ability of Benzoin resin absolute is not equal to the ability of Agarwood resin absolute but better than the ability of Canarium resin absolute. Through research and experiment, we can see Benzoin resin, Canarium resin and Agarwood resin are precious. They can be used as a good fixative in aromatherapy. This is a natural resin, a kind of resource available in Vietnam. Therefore, it is recommended for further research, exploitation, and effective use of this resource.

scholarly journals Using the Natural Fixative from Canarium Resin of Vietnam

2021 ◽  
pp. 33-39
Author(s):  
Le Huy Hai ◽  
Le Mai Xuan Truc
Keyword(s):  
Evaluation Method ◽  
Raw Material ◽  
Natural Resin ◽  
Volatile Solvents ◽  
Canarium Album ◽  
Comparison Results ◽  
Musk Xylene ◽  
Effective Use ◽  
Musk Ambrette ◽  
Better Than

Aim and Objectives: Nowadays, the fixative substance from natural materials is gradually replacing the fixative substance that has been synthesized from chemicals. The purpose of the study in this research is that we created a natural fragrance from Vietnamese raw material with a fixative from Canarium Album (Lour) as a natural fixative to replace artificial fixative.  Canarium plant is scientifically known as Canarium Album (Lour) Raensch of the Burseraceae family. Canarium Album L. is distributed in most of Northern provinces, central Highlands, and Southeast of Vietnam. Materials and Methods: The method of this process is resin extraction by volatile solvents.  We use a knife to cut into the trunk and let the resin run out, then harvest this resin to make fixative. The resin is dissolved in alcohol 96% and the distilled alcohol is removed to obtain absolute Canarium. Evaluation method of the ability of absolute Canarium is performed by comparing it with other fixatives in fragrances. Raw canarium resins is taken directly from canarium plants then refined absolute canarium as the natural fixative. We use this fixative substance in combinations of floral, woody smells and comparison with traditional artificial fixative as Musk ketone, Musk xylene, Musk ambrette. Results: The comparison results show that the ability to keep the fragrance of scent is lower than musk ambrette, musk ketone but it is better than musk xylene. Thus, canarium resin can be used as a natural fixative to replace artificial fixative in fragrance. Conclusions: Through research and experiment, we can see Canarium resin is precious. It can be used as a good fixative in aromatherapy. This is a natural resin, a kind of resource available in Vietnam. Therefore, it is recommended for further research, exploitation, and effective use of this resource.

scholarly journals Evaluation of a Method of Separating Agarwood Absolute from Aquilaria crassna Pulp by Soxhlet and Soaking for Fixative Substance in Blending Fragrance

2021 ◽  
pp. 27-35
Author(s):  
Le Huy Hai ◽  
Le Mai Xuan Truc ◽  
Nguyen Quoc Trung
Keyword(s):  
Research Team ◽  
Soxhlet Extraction ◽  
Wood Pulp ◽  
Diethyl Phthalate ◽  
Immersion Method ◽  
Agarwood Resin ◽  
Aquilaria Crassna ◽  
Better Than

Agarwood resin is a precious material that has been widely used in industry and life. The aim of this study is the evaluation of a method of separating Aquilaria crassna wood pulp with ethanol by Soxhlet and solvent immersion method for fixative substance in blending fragrance. Agarwood pulp of Aquilaria crassna tree is grown in Binh Thuan province, Vietnam. Our research team has extracted the Agarwood absolute F.1 and F.2 from Aquilaria crassna by Soxhlet extraction and soaking method. The fragrance is diluted 10 times by odorless solvent diethyl phthalate (DEP), then use paper and olfactory of the nose to evaluate the aroma. The yield of absolute Agarwood extracted by the method of Soxhlet is 5.56% weight. The yield of Agarwood absolute extracted by the method of soaking is 4.58% weight. Agarwood absolute F.1 is a fixative substance, which is capable of storing fragrance better than Agarwood absolute F.2. The scent of fragrance Fr.F.2 using Agarwood absolute F.2 is more like a natural scent than fragrance Fr.F.1 with fixative F.1. Separating Agarwood absolute F.1 from Aquilaria crassna pulp by Soxhlet provided yield and fixative capabilities higher than separating Agarwood absolute F.2 from Aquilaria crassna pulp by soaking. The scent of fragrance Fr.F.2 using Agarwood absolute F.2 is more like a natural scent than fragrance Fr.F.1 with Agarwood absolute F.1.

scholarly journals Student and Foundation Year Pharmacist Performance in the ‘UK Prescribing Safety Assessment’

2021 ◽  
Author(s):  
Ailsa Power ◽  
Derek Stewart ◽  
Gail Craig ◽  
Anne Boyter ◽  
Fiona Reid ◽  
...  
Keyword(s):  
Safety Assessment ◽  
Global Policy ◽  
Medical Graduates ◽  
Diagnostic Skills ◽  
Policy Direction ◽  
Total Psa ◽  
The Uk ◽  
Effective Use ◽  
Method Of Assessment ◽  
Better Than

Abstract BackgroundIncreasingly the global policy direction is for patient-facing pharmacist prescribers. The ‘UK Prescribing Safety Assessment’ (PSA) was developed for medical graduates to demonstrate prescribing competencies in relation to the safe and effective use of medicines.ObjectivesTo determine PSA performance of final year undergraduate student pharmacists (year 4) and pre-registration pharmacy graduates (year 5) and explore their opinions on its suitability. SettingScotland, UKMethodsFinal year undergraduates (n= 238) and pharmacy pre-registration graduates (n= 167) were briefed and undertook the PSA. PSA questions were mapped to specific thematic areas with 30 questions over 60 minutes. Data was analysed using descriptive statistics. A questionnaire was completed to gauge opinions on appropriateness of the PSA.Main Outcome Measure PSA scoresResultsMean total PSA score for pre-registration graduates (64.4, SD 10) was significantly higher than for undergraduates (51.2, SD 12.0,) (p<0.001). Pre-registration graduates performed significantly better across all question areas (all p<0.001 other than ‘adverse drug reactions’, p<0.01). Hospital pre-registration graduates performed statistically significantly better than community with higher overall scores (67.4, SD 9.8 v 63.2, SD 9.8, p<0.05). Positive views on the appropriateness of the approach and the usability of the online interface were obtained from participants. ConclusionHospital graduates performed better than the undergraduates, but there is a need to improve prescribing skills in all, most notably in diagnostic skills. The PSA is acceptable to the participants. These results will help inform pharmacy curricula development and provides a cross-disciplinary method of assessment of prescribing competence.

Experimental Study on Mechanical Property of Concrete Based on Seawater and Sea Sand

2013 ◽  
Vol 641-642 ◽  
pp. 574-577 ◽  
Author(s):  
Ying Tao Li ◽  
Ling Zhou ◽  
Mao Jiang ◽  
Yu Zhang ◽  
Jun Shao
Keyword(s):  
Mechanical Property ◽  
Experimental Study ◽  
Fly Ash ◽  
Raw Materials ◽  
Growth Trend ◽  
Sea Sand ◽  
Significant Strength ◽  
Dry Conditions ◽  
Early Strength ◽  
Better Than

In this paper, the mechanical property experiments of concrete based on the seawater and sea sand have been carried in different raw materials preparation and different conservation environments. The results show that the early strength and late strength of concrete based on seawater and sea sand are better than concrete based on freshwater and sand. There is no significant strength decreased for concrete based on seawater and sea sand under accelerated alternating wet and dry conditions. For concrete based on seawater and sea sand mixed with admixture, the downward trend of late strength is significantly delayed, the late strength of concrete based on the seawater and sea sand mixed with slag gets the most obvious growth trend, while the late strength of seawater and sea sand concrete mixed with fly ash gets the largest increment.

“Pure Milk Is Better Than Purified Milk”

2007 ◽  
Vol 31 (3) ◽  
pp. 411-433 ◽  
Author(s):  
Alan Czaplicki
Keyword(s):  
Interest Groups ◽  
Political Interest ◽  
The Political ◽  
Organizational Practices ◽  
Policy And Practice ◽  
Organizational Processes ◽  
Political Interests ◽  
Pure Milk ◽  
Over Time ◽  
Better Than

This article explains how pasteurization—with few outspoken political supporters during this period—first became a primary milk purification strategy in Chicago and why eight years passed between pasteurization’s initial introduction into law and the city’s adoption of full mandatory pasteurization. It expands the current focus on the political agreement to pasteurize to include the organizational processes involved in incorporating pasteurization into both policy and practice. It shows that the decision to pasteurize did not occur at a clearly defined point but instead evolved over time as a consequence of the interplay of political interest groups, state-municipal legal relations, and the merging of different organizational practices. Such an approach considerably complicates and expands existing accounts of how political interests and agreements shaped pasteurization and milk purification policies and practice.

Remembering the News: Effects of Medium and Message Discrepancy on News Recall over Time

1995 ◽  
Vol 72 (3) ◽  
pp. 666-681 ◽  
Author(s):  
Robert H. Wicks
Keyword(s):  
Associative Memory ◽  
News Media ◽  
Common Knowledge ◽  
Theoretical Explanation ◽  
Important Variable ◽  
News Stories ◽  
New Information ◽  
News Effects ◽  
Over Time ◽  
Better Than

This article suggests a theoretical explanation of the processes related to recall and learning of media news information. It does so by linking the concepts of schematic thinking and the Search of Associative Memory (SAM) to the variable of time. It argues that learning from the news may be better than many recent studies suggest. Although humans may have trouble recalling discrete news stories in recall examinations, it seems likely that they acquire “common knowledge” from the news media. Time is an important variable in helping people to remember news if they use it to think about new information in the context of previously stored knowledge.

Study on Modified Rapeseed Oil/Montmorillonite Nanocomposites

2010 ◽  
Vol 123-125 ◽  
pp. 1291-1294 ◽  
Author(s):  
Bin Lü ◽  
Jian Zhong Ma ◽  
Dang Ge Gao ◽  
Lei Hong
Keyword(s):  
Rapeseed Oil ◽  
Fourier Transforms ◽  
Raw Materials ◽  
Infrared Spectrometry ◽  
Emulsifying Properties ◽  
X Ray Diffraction ◽  
Layer Spacing ◽  
Transmission Electron ◽  
Ft Ir ◽  
Better Than

Modified rapeseed oil(MRO) was prepared by using rapeseed oil, ethylene diamine and acrylic acid as the raw materials. Modified rapeseed oil/montmorillonite(MRO/MMT) nanocomposite was prepared by using modified rapeseed oil and montmorillonite. The emulsifying properties of MRO and MRO/MMT were determined respectively. Fourier transforms infrared spectrometry (FT-IR) and Transmission Electron microscope (TEM) results showed that MRO/MMT was prepared successfully. X-ray diffraction (XRD) results showed that modified rapeseed oil could smoothly enter the interlayer of montmorillonite, and modified the montmorillonite; with an increase in the amount of montmorillonite, the layer spacing of montmorillonite in the MRO/MMT lower after the first increase. The results of emulsifying properties indicated that emulsifying properties of MRO/MMT was better than MRO.

Process optimization of chili flavor beef tallow and analysis of its volatile compounds by GC-IMS

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hang Li ◽  
Jiamin Liu ◽  
Zhanzhong Wang ◽  
Xiaodong Liu ◽  
Xichun Yan ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Ion Mobility ◽  
Beef Tallow ◽  
High Performance ◽  
Raw Materials ◽  
Chromatic Aberration ◽  
Frying Temperature ◽  
Frying Time ◽  
Solid Liquid ◽  
Better Than

Abstract With chili and liquid beef tallow as the main raw materials, the processing conditions of chili flavor beef tallow were explored. Gas chromatograpy-ion mobility spectrometry (GC-IMS) was used to determine the volatile compounds in chili flavor beef tallow. The capsaicin and dihydrocapsaicin in chili flavor beef tallow were determined by high performance liquid chromatography (HPLC). The optimum technological conditions were determined, and the index of chromatic aberration, cholesterol was also determined. Based on GC-IMS analysis, 102 kinds of volatile compounds were detected, and the sample III (the ratio of solid–liquid was 1:5, the frying temperature was 120 °C, and the frying time was 15 min) performed better than other samples. The preparation of chili beef tallow improves its antioxidant activity and makes its aroma more intense and more in line with the taste of Chinese people, which provides a theoretical and practical basis for the development of spice beef tallow in the future.

scholarly journals EFFECTIVE USE OF ROTARY FURNACE SHELL HEAT

2014 ◽  
Vol 54 (6) ◽  
pp. 414-419
Author(s):  
Julius Lisuch ◽  
Dusan Dorcak ◽  
Jan Spisak
Keyword(s):  
Waste Heat ◽  
Cooling System ◽  
Raw Materials ◽  
Significant Proportion ◽  
Rotary Furnace ◽  
Cost Effective ◽  
Total Energy Expenditure ◽  
Heat Losses ◽  
Controlled Cooling ◽  
Effective Use

<pre><pre>Significant proportion of the total energy expenditure for the heat treatment of raw materials are heat losses through the shell of rotary furnace. Currently, the waste heat is not used in any way and escapes into the environment. Controlled cooling system for rotary furnace shell (<span>CCSRF</span>) is a new solution integrated into the technological process aimed at reducing the heat loss of the furnace shell. Based on simulations and experiments carried out was demonstrated a significant effect of controlled cooling shell to the rotary furnace work. The proposed solution is cost-effective and operationally undemanding.</pre></pre>

Experimental Study on the Tribological Characteristics of Nanometer WS2 Lubricating Oil Additive Based on Engine Oil

2011 ◽  
Vol 328-330 ◽  
pp. 203-208 ◽  
Author(s):  
Cheng Bin Chen ◽  
Da Heng Mao ◽  
Chen Shi ◽  
Yang Liu
Keyword(s):  
Raw Materials ◽  
Viscosity Index ◽  
Engine Oil ◽  
Lubricating Oil ◽  
Contrast Study ◽  
Base Oil ◽  
Grinding Conditions ◽  
Lubricating Oil Additive ◽  
Great Wall ◽  
Better Than

Nano-WS2(tungsten disulfide nanoparticles)lubricating oil additive, prepared by the nanometer WS2particulates and semi-synthetic engine base oil as raw materials, was added into Great Wall engine oil with different mass ratio. With a contrast study on these oil samples, the results show that it can improve the extreme pressure, antiwear and viscosity-temperature properties of the engine oil effectively by adding a certain amount of nano-WS2additive, and the optimal concentration is 2wt%. The oil film strength, sintering load and viscosity index of this lubricating oil is respectively 1.35 times, 1.58 times and 1.05 times as that of Great Wall engine oil. In addition, when tested under the grinding conditions of 392 N, 1450 r /min and 30 min, the diameter of worn spot reduces 0.018mm, and the average friction coefficients of friction pairs decrease 16.3%, both of which are lubricated by the oil containing nano-WS2additive. Meanwhile, the experiments testify that the tribological and viscosity-temperature properties of the nano-WS2additive are better than that of the Henkel MoS2additive.

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