Category: 4740-78-7

Chemistry is an experimental science, Application In Synthesis of 1,3-Dioxan-5-ol, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 4740-78-7, Name is 1,3-Dioxan-5-ol, molecular formula is C4H8O3, belongs to alcohols-buliding-blocks compound. In a document, author is Yu, Miao.

This study examines contributing variables affecting the driver injury-severity in single-vehicle roadway departure crashes. To capture the threshold heterogeneity and unobserved heterogeneity, the random thresholds random parameters hierarchical ordered pro bit (HOPIT) approach is employed using the crash data collected from 2014 to 2017 in the State of North Carolina. Three injury severity levels are considered: severe injury, minor injury, and no injury. Attributes that potentially affect crash severity are examined, including driver, crash, roadway, and environmental characteristics. A series of likelihood ratio tests are conducted to examine the temporal stability of factors across different studied years. The marginal effects of factors in different injury-severity models are compared. Significant temporal instability is found among the studied year periods. The threshold value estimated using the random threshold random parameters HOPIT model is found to be random parameters and determined by specific explanatory variables. Additionally, the effects of some factors (e.g., alcohol, curved roadway, passenger car, SUV, and wet/water surface) on injury severity are relatively stable, while others (e.g., female driver, collector, and clear weather) present temporal unstable effects. Regarding the temporal instability, decision-makers need to treat the factors carefully to avoid developing incorrect countermeasures. (C) 2020 Elsevier Ltd. All rights reserved.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 4740-78-7, in my other articles. Application In Synthesis of 1,3-Dioxan-5-ol.

Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts

The major producers of chemicals have been the Europe, Japan and China. Due to the growing call for a cleaner, greener environment, people will have to find innovative ways to maintain their relevance. Here is a compound 4740-78-7, name is 1,3-Dioxan-5-ol. This compound has unique chemical properties. The synthetic route is as follows. Computed Properties of C4H8O3

[00768] To a solution of compound 263-1 (2 g, 6.55 mmol, 1 eq) in THF (2 mL) were added compound 263-la (1.02 g, 9.83 mmol, 1.5 eq) and PPh3 (2.58 g, 9.83 mmol, 1.5 eq). The mixture was degassed with N2 for 3 times. Then DIAD (1.99 g, 9.83 mmol, 1.9 mL, 1.5 eq) was added to the mixture dropwised at 0C. The mixture was stirred at 20C for 16 hr. LCMS showed that the starting material was remained and 33% of desired product was detected. TLC (PE/EA = 3/1, UV) showed that several spots were formed. The reaction mixture was concentrated in vacuum and the residue was diluted with EA (20 mL), washed with water (5 mL) and brine (5 mL). The organic phase was dried over Na2S04, filtered and concentrated in vacuum. The crude product was purified by column chromatography (Si02). Compound 263 (1.3 g, 2.79 mmol, 42.6% yield) was obtained. LCMS (ESI): RT = 0.885 min, mass calcd. For Ci8Hi6F3N502,391.13 m/z found 392.0 [M+H] +; 1HNMR (400 MHz, CDC13) 9.02 (s, 1H), 8.20 (dd, J= 7.92, 1.38 Hz, 1H), 7.51- 7.58 (m, 3H), 7.35- 7.42 (m, 1H), 7.30 (d, J= 8.54 Hz, 2H), 7.03- 7.08 (m, 1H), 5.12 (s, 1H), 4.85- 4.94 (m, 2H), 4.65- 4.80 (m, 2H), 4.00 – 4.07 (m, 2H).

With the rapid development of chemical substances, we look forward to future research findings about 4740-78-7.

Reference:
Patent; VIVACE THERAPEUTICS, INC.; KONRADI, Andrei W.; LIN, Tracy Tzu-Ling Tang; (396 pag.)WO2018/204532; (2018); A1;,
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

The major producers of chemicals have been the Europe, Japan and China. Due to the growing call for a cleaner, greener environment, people will have to find innovative ways to maintain their relevance. Here is a compound 4740-78-7, name is 1,3-Dioxan-5-ol. This compound has unique chemical properties. The synthetic route is as follows. category: alcohols-buliding-blocks

[00768] To a solution of compound 263-1 (2 g, 6.55 mmol, 1 eq) in THF (2 mL) were added compound 263-la (1.02 g, 9.83 mmol, 1.5 eq) and PPh3 (2.58 g, 9.83 mmol, 1.5 eq). The mixture was degassed with N2 for 3 times. Then DIAD (1.99 g, 9.83 mmol, 1.9 mL, 1.5 eq) was added to the mixture dropwised at 0C. The mixture was stirred at 20C for 16 hr. LCMS showed that the starting material was remained and 33% of desired product was detected. TLC (PE/EA = 3/1, UV) showed that several spots were formed. The reaction mixture was concentrated in vacuum and the residue was diluted with EA (20 mL), washed with water (5 mL) and brine (5 mL). The organic phase was dried over Na2S04, filtered and concentrated in vacuum. The crude product was purified by column chromatography (Si02). Compound 263 (1.3 g, 2.79 mmol, 42.6% yield) was obtained. LCMS (ESI): RT = 0.885 min, mass calcd. For Ci8Hi6F3N502,391.13 m/z found 392.0 [M+H] +; 1HNMR (400 MHz, CDC13) 9.02 (s, 1H), 8.20 (dd, J= 7.92, 1.38 Hz, 1H), 7.51- 7.58 (m, 3H), 7.35- 7.42 (m, 1H), 7.30 (d, J= 8.54 Hz, 2H), 7.03- 7.08 (m, 1H), 5.12 (s, 1H), 4.85- 4.94 (m, 2H), 4.65- 4.80 (m, 2H), 4.00 – 4.07 (m, 2H).

With the rapid development of chemical substances, we look forward to future research findings about 4740-78-7.

Reference:
Patent; VIVACE THERAPEUTICS, INC.; KONRADI, Andrei W.; LIN, Tracy Tzu-Ling Tang; (396 pag.)WO2018/204532; (2018); A1;,
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 4740-78-7, Name is 1,3-Dioxan-5-ol, SMILES is OC1COCOC1, belongs to alcohols-buliding-blocks compound. In a document, author is Mohammadi, Sevda, introduce the new discover, HPLC of Formula: https://www.ambeed.com/products/4740-78-7.html.

Differential Microwave Resonator Sensor for Real-Time Monitoring of Volatile Organic Compounds

In this work, a noninvasive microwave gas sensor suitable for accurate and real-time tracking of volatile organic compounds concentration is presented. The proposed differential sensor was comprised of two independent split-ring resonators in power splitter/combiner configuration to enhance the robustness of the sensor to changes in environmental parameters. The designwas fabricatedon a Rogers RT/duroid 5880 high-frequency substrate and operated at f(s) = 5.12 GHz and f(r) = 5.65 GHz, referring to the sensing and reference resonant frequencies, respectively. A thin layer of polydimethylsiloxane was used as an interface layer in the sensing resonator region with the strongest electric field to enable gas sensing with high sensitivity. The performance of the sensor was validated by introducing different volatile organic compounds, such as acetone, methanol, ethanol, and isopropyl alcohol. Time-based responses of the sensor demonstrated the capability of the sensor to monitor different concentrations of acetone vapor ranging from low, 387 to 1935 ppm, with the sensitivity of 0.02 mdB/ppm and high concentrations, 3878 to 62048 ppm, with sensitivity of 0.0125 mdB/ppm.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 4740-78-7 is helpful to your research. HPLC of Formula: https://www.ambeed.com/products/4740-78-7.html.

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Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts

Chemistry is an experimental science, Formula: C4H8O3, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 4740-78-7, Name is 1,3-Dioxan-5-ol, molecular formula is C4H8O3, belongs to alcohols-buliding-blocks compound. In a document, author is Bitire, Sarah Oluwabunmi.

Transesterification of parsley seed oil using a green catalyst: considering the optimization process and modeling

Y The production of bio-based diesel by using calcium oxide catalyst derived from waste material was investigated in this work as well as the influence of varying the process variables on the biodiesel yield. The optimisation of the process variables (ratio of alcohol-to-oil, temperature, and the amount of catalyst) for parsley biodiesel was achieved using RSM. The biodiesel yield of 92.19% was predicted from the data analysis as the optimum yield at optimum reaction conditions of 9.4:1, 59.31 degrees C, and 2.7 wt% for the molar ratio of alcohol: oil, temperature and catalyst amount respectively. The characterisation of the biodiesel was achieved with FTIR and GC-MS. Also, the fuel characteristics of biodiesel were within the specifications of the ASTM D6751.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 4740-78-7, in my other articles. Formula: C4H8O3.

Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts

Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, Category: alcohols-buliding-blocks4740-78-7, Name is 1,3-Dioxan-5-ol, SMILES is OC1COCOC1, belongs to alcohols-buliding-blocks compound. In a article, author is Raitasalo, Kirsimarja, introduce new discover of the category.

Smoke in the air – Associations between experimentation with cannabis and the use of tobacco and nicotine products among 15-16-year-old school students

Background: Cannabis is the most popular illicit drug among adolescents in developed countries, including Finland. The aim of this study was to estimate 1) how cannabis experimentation among Finnish adolescents changed between 2003 and 2019, and 2) whether the associations between cannabis experiments and factors related to it, especially the use of tobacco and nicotine products, changed during the same time period. Methods: The analyses are based on the European School Survey Project on Alcohol and Other Drugs data, collected from Finnish adolescents aged 15 to 16 in 2003, 2007, 2011, 2015, and 2019 (N = 20,630). Results: Experimentation with cannabis among Finnish adolescents has increased since the beginning of our follow-up. At the same time, alcohol use and smoking have decreased markedly, and attitudes toward cannabis use have become more relaxed. The association between smoking and cannabis experimentation has become weaker over time. However, the use of tobacco and nicotine products, especially polytobacco, is still a strong risk factor for experimentation with cannabis. The higher the number of tobacco or nicotine products used, the higher the probability for cannabis experimentation. Conclusions: Experimentation with cannabis has previously been concentrated predominantly on adolescents who smoke, but recently non-smokers are increasingly trying cannabis. It is possible that alternative ways of using cannabis may have increased its use. Despite the strict cannabis policy in Finland, its use has increased, which may be an indication that youth cultures and images of different substances play a significant role in adolescents experimenting with cannabis.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions. you can also check out more blogs about 4740-78-7. Category: alcohols-buliding-blocks.

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Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts

In an article, author is Huang, Lei, once mentioned the application of 4740-78-7, Quality Control of 1,3-Dioxan-5-ol, Name is 1,3-Dioxan-5-ol, molecular formula is C4H8O3, molecular weight is 104.11, MDL number is MFCD00014645, category is alcohols-buliding-blocks. Now introduce a scientific discovery about this category.

Synthesis and Application of Platinum-Based Hollow Nanoframes for Direct Alcohol Fuel Cells

Although platinum (Pt)-based catalysts are suffering from high costs and limited reserves, they are still irreplaceable in a short period of time in terms of catalytic performance. Structural optimization, composition regulation and carrier modification are the common strategies to improve the activity and stability of Pt-based catalyst. Strikingly, the morphological evolution of Pt-based electrocatalyst into nanoframes (NFs) have attracted wide attention to reduce the Pt consumption and improve the electrocatalytic activity simultaneously. Contrary to Pt-based solid nanocrystalline materials, Pt-based NFs have many advantages in higher atomic utilization, open space structure and larger specific surface area, which facilitate electron transfer, mass transport and weaken surface adsorption by more unsaturated coordination sites. Here we introduce the detailed preparation strategies of Pt-based NFs with different etching methods (oxidative etching, chemical etching, galvanic replacement and carbon monoxide etching), crystal structure evolution and formation mechanism, efficient applications for oxygen reduction reaction (ORR), methanol oxidation reaction (MOR) and ethanol oxidation reaction (EOR) in direct alcohol fuel cells (DAFCs). Based on the high-efficiency atom utilization, open space structure and diverse alloy composition, Pt-based NFs exhibit superior activity, stability and anti-poisoning than commercial counterparts in the application of DAFCs. The current challenges and future development of Pt-based NFs are prospected on the type of NFs materials, synthesis and etching methods, crystal control and catalytic performance. We propose a series of improvement mechanisms of Pt-based NFs, such as small size effect, high-energy facets, Pt-skin construction and Pt-C integration, thereby weakening the molecule absorption, increasing the Pt utilization, strengthening the intrinsic stability, and alleviating the metal dissolution and support corrosion. Additionally, the scale-up synthesis of catalytic materials, membrane electrodes assembly, and development of the start-stop system and the circulation system design are essential for the commercial application of Pt-based NFs and industrial manufacturing of DAFCs. More importantly, the reaction mechanism, active site distribution and dynamic changes in the catalytic material during the catalytic reaction are crucial to further explain the maintenance and evolution of catalytic performance, which will open a window to elucidate the improvement mechanism of the catalyst in the fuel cell reactions. This review work would promote continuous upgradations and understandings on Pt-based NFs in the future development of DAFCs.

If you are interested in 4740-78-7, you can contact me at any time and look forward to more communication. Quality Control of 1,3-Dioxan-5-ol.

Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts

Chemistry can be defined as the study of matter and the changes it undergoes. You’ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 4740-78-7, Name is 1,3-Dioxan-5-ol, molecular formula is , belongs to alcohols-buliding-blocks compound. In a document, author is Arul, K. Thanigai, HPLC of Formula: C4H8O3.

Enhanced anticorrosion properties of nitrogen ions modified polyvinyl alcohol/Mg-Ag ions co-incorporated calcium phosphate coatings

Nitrogen ions (70 keV) were implanted on composite coatings containing polymer/Mg (magnesium)-Ag (silver) ions co-incorporated hydroxyapatite which was developed using microwave irradiation. Average crystallite size of modified coatings is reduced by 80% compared to the pristine. The variation of atomic bond strength of modified coatings is realized. The electrical resistance (77%), microhardness (4.3%), roughness (4.5 times) and pore size are enhanced on the nitrogen implanted coatings. Superhydrophilic surface is turned to hydrophobic on implantation. At higher fluence (1 x 10(17) ions/cm(2)) depicted an enhanced corrosion potential compared to the other coatings. Thus, the new insight on modified coatings is elucidated by correlating phase-structure, surface and corrosion resistance.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 4740-78-7, in my other articles. HPLC of Formula: C4H8O3.

Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts

Chemistry can be defined as the study of matter and the changes it undergoes. You’ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 4740-78-7, Name is 1,3-Dioxan-5-ol, molecular formula is , belongs to alcohols-buliding-blocks compound. In a document, author is Arul, K. Thanigai, HPLC of Formula: C4H8O3.

Enhanced anticorrosion properties of nitrogen ions modified polyvinyl alcohol/Mg-Ag ions co-incorporated calcium phosphate coatings

Nitrogen ions (70 keV) were implanted on composite coatings containing polymer/Mg (magnesium)-Ag (silver) ions co-incorporated hydroxyapatite which was developed using microwave irradiation. Average crystallite size of modified coatings is reduced by 80% compared to the pristine. The variation of atomic bond strength of modified coatings is realized. The electrical resistance (77%), microhardness (4.3%), roughness (4.5 times) and pore size are enhanced on the nitrogen implanted coatings. Superhydrophilic surface is turned to hydrophobic on implantation. At higher fluence (1 x 10(17) ions/cm(2)) depicted an enhanced corrosion potential compared to the other coatings. Thus, the new insight on modified coatings is elucidated by correlating phase-structure, surface and corrosion resistance.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 4740-78-7, in my other articles. HPLC of Formula: C4H8O3.

Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 4740-78-7, Name is 1,3-Dioxan-5-ol, molecular formula is C4H8O3. In an article, author is Doaei, Saeid,once mentioned of 4740-78-7, Formula: C4H8O3.

Interactions of anthropometric indices, rs9939609 FTO gene polymorphism and breast cancer: A case-control study

Contradictory results were reported on the effect of fat mass- and obesity-associated (FTO) gene and anthropometric measurements on breast cancer (BC). This study aimed to assess the interactions between rs9939609 polymorphism of FTO gene, anthropometric indices and BC risk in Iranian women. This case-control study was performed on 540 women including 180 women with BC and 360 healthy women in Tehran, Iran. Physical activity and dietary intakes were assessed by validated questionnaires. Data on sociodemographic and pathologic factors of the participants as well as their blood samples were collected. The rs9939609 FTO gene polymorphism was genotyped using the tetra-primer amplification refractory mutation system-polymerase chain reaction (T-ARMS-PCR). No significant association was found between BC and risk allele of FTO rs9939609 polymorphism after adjustments for the confounders. However, there was a significant association between rs9939609 polymorphism risk allele and BC risk in females with overweight, even after adjusting for age, family history of BC, abortion, BMI and the number of pregnancies (P < .05). The association was disappeared after further adjustments for lifestyle factors including smoking, alcohol consumption, calorie and macronutrients intake, and physical activity. The FTO gene polymorphism was associated with the risk of BC in overweight individuals. This association was influenced by environmental factors including diet, alcohol consumption and smoking. Future studies are required to confirm the association between the FTO gene and BC in overweight females and to identify the underlying mechanisms. Interested yet? Keep reading other articles of 4740-78-7, you can contact me at any time and look forward to more communication. Formula: C4H8O3.

Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts