scholarly journals Swelling Properties of Biodegradable Superabsorbent Polymers

2020 ◽  
pp. 1-7
Author(s):  
Elżbieta Czarnecka ◽  
Jacek Nowaczyk
Keyword(s):  
Room Temperature ◽  
Electrolyte Solutions ◽  
Global Market ◽  
Sodium Acrylate ◽  
Annual Growth Rate ◽  
Swelling Properties ◽  
Superabsorbent Polymers ◽  
Compound Annual Growth Rate ◽  
Freeze Dried ◽  
Biodegradable Poly

The size of the global market for biodegradable superabsorbent materials has been estimated at USD 120.64 billion. It is expected to register Compound Annual Growth Rate (CAGR) at 6.2% in 2018-2025. Superabsorbent polymers (SAP) are most frequently used in the hygiene products industry in the form of non-biodegradable poly (sodium acrylate). Most personal care products end up in landfills where decomposition times are estimated to be up to half a thousand years due to the synthetic polymers. Simple replacement of poly (sodium acrylate) with biodegradable superabsorbent polymer is a challenging task that includes several stages of scientific investigation. In this paper, the sorption of water and electrolyte solutions are discussed. Biodegradable superabsorbent polymers were obtained from polysaccharides, while a proportionally varying amount of the cross-linking agent was used. The absorption properties of deionized water and sodium salt solution were tested and the influence of polymer drying was discussed. The superabsorbent polymers were dried as follows: dM1-the sample was frozen at -20°C for 48 hours and was dried in vacuum (10-2Tr) at room temperature for 48 hours; dM2-the sample frozen to -200°C for 2 hours and was vacuum (10-2Tr) dried at room temperature for 48 hours; dM3-the sample was dried in a vacuum dryer (~10 Tr) at 50°C for 24 hours, dM4-the sample was frozen to -80°C for 24 hours and then freeze dried for 78 hours.

scholarly journals ENVIRONMENTAL SCAN ON PHARMACEUTICALS REQUIRING COMPANION DIAGNOSTICS

2016 ◽  
Vol 32 (5) ◽  
pp. 327-336 ◽  
Author(s):  
Tara Cowling ◽  
Michel Boucher
Keyword(s):  
Adverse Reactions ◽  
Cost Savings ◽  
The United States ◽  
Global Market ◽  
Annual Growth Rate ◽  
Potential Cost ◽  
Compound Annual Growth Rate ◽  
Environmental Scan ◽  
Regulatory Frameworks ◽  
Important Health

Objectives: Companion diagnostic tests (CDx) are used to measure an individual's protein or gene expression (biomarkers) to inform choice of therapy. The increasing number of drugs requiring CDx poses challenges for regulatory and reimbursement policies. To better understand this issue, an environmental scan was conducted by the Canadian Agency for Drugs and Technologies in Health (CADTH).Methods: The environmental scan was based on a focused literature search and feedback solicited from targeted stakeholders.Results: The global market for CDx is expected to grow considerably until the end of this decade, with compound annual growth rate around 20 percent. Several factors may impact the adoption of CDx, including the potential cost-savings associated with reduced treatment failures and adverse reactions. Anticipating an expansion in drugs with CDx, some countries have updated their regulatory frameworks, including the United States where the FDA released new guidance in 2014. With respect to reimbursement, both the United Kingdom and Australia updated their evaluation frameworks to inform reimbursement decisions; however, several countries, including Canada, have not published policies for co-dependent technology.Conclusion: The market size for CDx is expected to considerably expand in the future. The drive in uptake may be influenced by many factors including an increased knowledge of biomarkers and molecular drivers of disease and the potential cost-savings associated with fewer treatment failures and adverse reactions. Assessing whether such benefits materialize is important. Health technology assessment will play an important role in informing policies regarding the clinical use and funding of pharmaceuticals with CDx.

Valorisation of chitinous biomass for antimicrobial applications

2018 ◽  
Vol 90 (2) ◽  
pp. 293-304 ◽  
Author(s):  
Anwar Jardine ◽  
Shakeela Sayed
Keyword(s):  
Antimicrobial Properties ◽  
Value Added ◽  
Global Market ◽  
Growth Potential ◽  
Annual Growth Rate ◽  
Sustainable Supply Chain ◽  
Green Technologies ◽  
Chitosan Derivatives ◽  
Compound Annual Growth Rate ◽  
Chitin And Chitosan

Abstract The chitin and chitosan market worldwide has shown tremendous growth, propelled by the expansion in the application domain. The market volume is projected to be more than 155 thousand metric tons by the year 2022. The global market for chitin and chitosan derivatives is expected to reach $4.2 billion by 2021 up from $2.0 billion in 2016 at a compound annual growth rate (CAGR) of 15.4%, from 2016 to 2021. Among chitin derivatives, chitosan is projected to offer the highest growth potential. The demand for a reliable source of high quality chitosan is rapidly increasing as new value added products enter the market. At the same time the growth of value added chitosan based products are limited by the availability of a sustainable supply chain. Antimicrobial properties are of special interest in the packaging, cosmetic, food and biomedical sector. Most of the latter applications warrants high-volume and low cost materials. However, the process chemistry for bulk chitosan manufacturing is currently not very environmentally friendly. Green technologies for chitosan modification have increased in recent years and now face the challenge of economic viability. In this review the status of antimicrobial chitosan derivatives will be reported with a critical review of the chemical technologies that would mitigate the commercialisation of these biopolymers in the antimicrobial biopolymer market sector. The amount of publications per annum has increased exponentially and the lack of global standardised antimicrobial test protocols make it rather challenging to properly evaluate the relative efficacy of these polymers.

Scanning Electron Microscopy-cuticular Lesions on the Roundworm Ascaris Suum

1970 ◽  
Vol 28 ◽  
pp. 114-115
Author(s):  
P. A. Madden ◽  
W. R. Anderson
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Freeze Drying ◽  
Room Temperature ◽  
Secondary Electron ◽  
Distilled Water ◽  
Freeze Dried ◽  
Silver Paint ◽  
To Come ◽  
Scanning Electron

The intestinal roundworm of swine is pinkish in color and about the diameter of a lead pencil. Adult worms, taken from parasitized swine, frequently were observed with macroscopic lesions on their cuticule. Those possessing such lesions were rinsed in distilled water, and cylindrical segments of the affected areas were removed. Some of the segments were fixed in buffered formalin before freeze-drying; others were freeze-dried immediately. Initially, specimens were quenched in liquid freon followed by immersion in liquid nitrogen. They were then placed in ampuoles in a freezer at −45C and sublimated by vacuum until dry. After the specimens appeared dry, the freezer was allowed to come to room temperature slowly while the vacuum was maintained. The dried specimens were attached to metal pegs with conductive silver paint and placed in a vacuum evaporator on a rotating tilting stage. They were then coated by evaporating an alloy of 20% palladium and 80% gold to a thickness of approximately 300 A°. The specimens were examined by secondary electron emmission in a scanning electron microscope.

Assessment of Gaming Practices and its effect on scholastic performance of medical students in India: A Case Control study. (Preprint)

2020 ◽  
Author(s):  
Deodatt Madhav Suryawanshi ◽  
Divya Rajaseharan 2nd ◽  
Raghuram Venugopal 3rd ◽  
Ramchandra Goyal 4th ◽  
Anju Joy 5th
Keyword(s):  
Medical Students ◽  
Case Control ◽  
Annual Growth Rate ◽  
Gaming Addiction ◽  
Gaming Disorder ◽  
Compound Annual Growth Rate ◽  
Internal Assessment ◽  
Assessment Scores ◽  
Scholastic Performance ◽  
Excessive Gaming

BACKGROUND Introduction: Gaming is a billion-dollar industry growing at a Compound annual growth rate (CAGR) of 9 %- 14.3% with biggest market in South East Asian countries. Availability of Low-cost smart phones, ease of internet access has made gaming popular among youth who enjoy it as a leisure activity. According to the WHO excessive indulgence in Gaming can lead to Gaming disorder. Medical students indulging in excessive gaming can succumb to gaming disorder which can affect their scholastic performance. Hence this study was done to assess the gaming practices and its effect on scholastic performance. OBJECTIVE Objective: 1. To assess the various Gaming practices and the Prevalence of Gaming addiction among medical students. 2. To study the effect of Gaming practices on Scholastic performance of medical students. METHODS Methods: The present study used a case control design where the 448(N) study participants were recruited using non probability sampling technique.91 (Nc) cases who were Gaming for past 6 months were identified using rapid preliminary survey .91 controls (Nco) who never played games were selected and matched for age and sex. Internal Assessment scores (%) of cases and controls were compared. Snedecor F test and Student t test were used to find out the association between the hours of gaming and internal assessment scores (%) and difference of Internal assessment scores between cases and controls respectively. Odds ratio was calculated to identify the risk of Poor scholastic performance. Prevalence of Gaming addiction was assessed using Lemmen’s Gaming addiction scale (GAS). RESULTS Results: Frequency of gaming (hrs) was not associated with the Mean internal assessment scores (p>0.05). Male students (cases) showed significant reduction in both their internal assessment scores (p<0.001,<0.01) whereas no reduction was observed in Female cases. A negative correlation was observed between GAS and internal assessment scores (r=-0.02). Prevalence of Gaming addiction using GAS was found to be 6.2% among the study population(N=448) and 31% among Cases (Nc=91).The risk of low scores was (OR =1.80-1.89) times more in cases than controls. CONCLUSIONS Conclusions: Excessive Gaming adversely affects scholastic performance in males than females.Awareness about Gaming addiction needs to be created among students, parents and teachers. Institutionalized De-addiction services should be made available to medical students. CLINICALTRIAL No

Australian Biotechnology: A 10-Year Study of Investor Performance

2021 ◽  
Vol 26 (4) ◽  
Author(s):  
Peter L. Molloy ◽  
Lester W. Johnson ◽  
Michael Gilding
Keyword(s):  
Drug Development ◽  
Global Financial Crisis ◽  
Critical Mass ◽  
Share Price ◽  
Annual Growth Rate ◽  
Compound Annual Growth Rate ◽  
Listed Firms ◽  
Investor Returns ◽  
The Global Financial Crisis ◽  
The Impact

A recent study assessed the investor performance of the Australian drug development biotech (DDB) sector over a 15-year period from 2003 to 2018. The current study builds on that research and extends the analysis to 2020, using a 10-year period starting 2010, to exclude the impact of the global financial crisis in 2008/09. Based on a value-weighted portfolio of all 41 DDB firms, the overall sector delivered a negative annualized return of -4.1%. Individual firm performance was also assessed using the compound annual growth rate (CAGR) in share price over the period as a measure of investor outcomes. On this basis 68% of firms produced negative CAGRs over the period, and of the 32% of firms that produced positive CAGRs, six firms produced CAGRs greater than 20% per annum and in three cases of recently-listed firms, the CAGR’s were greater than 50%. Overall however, the sector overall delivered very poor investor returns and despite a relatively large number of listed biotech firms, Australian biotechnology continues to be small and weak in terms of its contribution to global biotechnology industrialization. As such it lacks the critical mass to grow a robust bioeconomy based on drug development, which remains the standard-bearer of biotechnology industrialization.

A Study of E-Book Industry’s Cooperation in Taiwan

2012 ◽  
Vol 262 ◽  
pp. 223-226
Author(s):  
Tsung Yu Hao ◽  
Li Yi Ma ◽  
Hsiang Jung Lee
Keyword(s):  
Research Method ◽  
Penetration Rate ◽  
Book Industry ◽  
Annual Growth Rate ◽  
Digital Products ◽  
Internet Service ◽  
Compound Annual Growth Rate ◽  
On Line ◽  
Internet Penetration ◽  
Hardware Industry

Purchasing the E-books from the on-line bookstore is the trend that Amazon created this business model successfully. Miniwatts Marketing Group (2010) pointed that the internet penetration rate in Taiwan has been reached 70%. Amazon and Barnes and Nobel both claimed the revenue of e-books exceeded the books in 2010. The compound annual growth rate is nearly 72% in year 2008–2013. Therefore, there is a great need to investigate the cross-industry of publisher industry, hardware industry, and internet service platforms to integrate the picture of E-book industry in Taiwan. The qualitative research method will be used to interview the managers in the related leading companies in order to understand the “how to do and what to do” between each other to promote the digital products. By gathering the information to gain the knowledge for the reference to the related industries to work closely to benefit each other and expand the business scope. It is absolutely helpful to create a comfortable reading environment to satisfy the readers’ various needs.

scholarly journals Organic electrolyte solutions as versatile media for the dissolution and regeneration of cellulose

2017 ◽  
Vol 19 (20) ◽  
pp. 4754-4768 ◽  
Author(s):  
Matthew T. Clough
Keyword(s):  
Ionic Liquid ◽  
Room Temperature ◽  
Electrolyte Solutions ◽  
Room Temperature Ionic Liquid ◽  
Organic Electrolyte

Organic electrolyte solutions – mixtures of a (room-temperature) ionic liquid with a neutral, organic, polar co-solvent – are attracting increasing attention as solvents for the regeneration and derivatisation of cellulose.

scholarly journals The influence of selected preservation methods and storage time on the content of antioxidants in blackthorn (Prunus spinosa L.) fruits

2019 ◽  
Vol 74 (1) ◽  
pp. 53-62
Author(s):  
KATARZYNA OLESIŃSKA ◽  
DANUTA SUGIER ◽  
ŁUKASZ SĘCZYK
Keyword(s):  
Room Temperature ◽  
Storage Time ◽  
Antioxidant Properties ◽  
Iron Ions ◽  
Polyphenol Content ◽  
Total Polyphenols ◽  
Dried Fruits ◽  
Prunus Spinosa ◽  
Freeze Dried ◽  
And Storage

The aim of the study was to determine the influence of selected methods of preservation and storage time on the content of antioxidants in blackthorn fruit (Prunus spinosa L.). Preserved fruits were stored for 13 and 26 weeks without light at room temperature (freeze-dried and convection dried) and at –20°C (frozen samples). It was shown that both the method of preservation and the storage time had significant influence on the content of polyphenols (anthocyanins, flavonoids, total polyphenols) and antioxidant properties (Fe3+ reduction strength) of blackthorn fruit. As the storage time progressed, the anthocyanins content decreased in all preservation variants. In the case of frozen fruit after 26 weeks of storage, the content of flavonoids (by 12.5%), total polyphenols (by 48%) and the ability to reduce the iron ions were increased (by 55%). In turn, in the dried fruits after this period, the anthocyanins content, the polyphenol content and reduction strength were reduced. The highest values of the parameters evaluated after the assumed storage time has been demonstrated in lyophilizates.

scholarly journals IMPACT OF COVID-19 ON MALAYSIAN E-COMMERCE

2021 ◽  
Vol 5 (4) ◽  
Author(s):  
Vinesh Raj S. ◽  
Meghna Gohain
Keyword(s):  
Small And Medium Enterprises ◽  
Annual Growth Rate ◽  
Potential Growth ◽  
Compound Annual Growth Rate ◽  
Market Outlook ◽  
Customer Services ◽  
The Government ◽  
Medium Enterprises ◽  
Almost All ◽  
Tremendous Impact

COVID-19 pandemic has made a tremendous impact all across the globe. It is clearly reflected in the ongoing lockdowns, closing down of almost all shops, restaurants and public transportations, surge of unemployment etc. all culminating into severe economic depression. Malaysia, also, has faced this hit of recession, depreciation, and unemployment to a great extent with the current pandemic situation. However, when everything seems to be crumbling, e-commerce appears to have found its golden break in raising its profit and contributing to the overall GDP growth of Malaysia. There are various factors that played into the booming of e-commerce owing to the current pandemic situation. Needless to say, the value of e-commerce in helping the depleting economy and just plain convenience for people to purchase essential commodities during lockdown cannot be denied. Even the government of Malaysia has been showing support by encouraging local Micro, Small and Medium Enterprises (MSMEs). E-commerce has the potential to become a major source of contribution to the country’s economy. However, it needs to ramp up their infrastructure regarding security, delivery, and customer services. Additionally, importance should be given to local businesses in order to empower the local e-commerce sector. This article aims to give an overview of the trend in the growth of e-commerce during the COVID era and its potential growth in the next four years based on Compound Annual Growth Rate (CAGR) and Statista Digital Market Outlook and the factors that have led to the boom in e-commerce in Malaysia.

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