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Antimicrobial stewardship program: An institutional assessment of core elements and perceived barriers in private hospitals in Iloilo City
(2022)
Infectious diseases kill millions of people around the globe and the discovery of antimicrobial agents revolutionizes the ability to treat infectious diseases. However, over the past years, the use and misuse of antimicrobials ...
Synthesis of polyaspartic acid-capped 2-aminoethylamino acid as a green water treatment agent and study of its inhibition performance and mechanism for calcium scales
(Royal Society of Chemistry, 2022-08-30)
Polyaspartic acid (PASP), a well-known green scale inhibitor for industrial water treatment, might be decomposed with prolonged duration, and its anti-scaling performance against CaCO<small><sub>3</sub></small> and CaSO<small><sub>4</sub></small> is diminished at a low concentration (<10 mg L<small><sup>−1</sup></small>) and a high temperature. With semi-ethylenediaminetetraacetic acid (EDTA) tetrasodium salt as the mimicking model, novel phosphorus-free PASP-capped 2-aminoethylamino acid (PASP–ED<small><sub>2</sub></small>A) containing side chains bearing multi-functional groups is rationally designed and successfully prepared via the ring-opening reaction of cheap poly(succinimide) under mild reaction conditions with the assistance of readily available 2-aminoethyl amino acid. The static scale inhibition method is used to evaluate the scale inhibition performance of the as-synthesized PASP derivative. Scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy are utilized to monitor the crystallization process of calcium carbonate and calcium sulfate scales, and density functional theory calculations are conducted to shed light on the relationship between the molecular structure and scale inhibition mechanism of PASP–ED<small><sub>2</sub></small>A. Results show that the as-prepared PASP–ED<small><sub>2</sub></small>A shows better scale inhibition performance for CaCO<small><sub>3</sub></small> and CaSO<small><sub>4</sub></small> than PASP with a low concentration, a high temperature, and an extended duration. Particularly, PASP–ED<small><sub>2</sub></small>A with a concentration of 10 mg L<small><sup>−1</sup></small> exhibits the best scale inhibition performance for CaCO<small><sub>3</sub></small>; its scale inhibition capacity is about two times as much as that of PASP. The reason lies in that the coordination atoms in the molecular structure of PASP–ED<small><sub>2</sub></small>A can chelate with Ca<small><sup>2+</sup></small> to inhibit the combination of Ca<small><sup>2+</sup></small> with anions and prevent the generation of CaCO<small><sub>3</sub></small> and CaSO<small><sub>4</sub></small> scales. The PASP–ED<small><sub>2</sub></small>A derivative can more efficiently retard the formation and growth of CaCO<small><sub>3</sub></small> and CaSO<small><sub>4</sub></small> crystal nuclei and exerts better inhibition performance against CaCO<small><sub>3</sub></small> and CaSO<small><sub>4</sub></small> scales than PASP....
Customer perceived value, satisfaction of service quality, and loyalty to private dental clinics in Beijing, China
(2022-12)
This descriptive and correlational research aimed to determine the customers’ perceived value, satisfaction of service quality, and loyalty to the private dental clinics in Beijing China. The respondents of the study were ...
Local literatures collection of state university and college libraries in Panay Island
(2022)
The purpose of this study was to determine the local literatures collection of State University and College libraries in Panay Island. Specifically, this research aims to: 1). identify the local literatures collection of ...
Local literatures collection of private higher education institutions libraries in Iloilo City
(2022)
The purpose of this study was to determine the local literature collection of private higher education institutions’ libraries in Iloilo City. Specifically, this study aimed to determine the collection of local literatures ...
Library security management among state universities and colleges in Panay: Basis for a library security management plan
(2022-07)
Every library must have a well-planned security management to secure and protect all library resources as well as the people. Thus, this study was conducted in order to determine the library security management among State ...
The effect of discipline-based art education on the aesthetic appreciation ability and art attitude among art design majors in a university in China
(2022-05)
Discipline based art education (DBAE) is an educational concept representing the general trend of visual art education in contemporary American schools. This study used embedded experimental intervention design to determine ...
Business practices for resiliency among coffee shops in Iloilo City
(2022-12)
This study was conducted to determine the business practices and resiliency among 109 coffee shops and coffee shop managers in Iloilo City from August 2021 to May 31, 2022, using a descriptive-correlational research design ...
Assessment of the performance of a faculty and employees’ multi-purpose cooperative
(2022-07)
This study was conducted to assess the performance of the Faculty and Employees Multi-purpose Cooperative. Descriptive study with documental review and analysis was conducted and one-shot survey was applied to all cooperative ...
Work attitude, organizational commitment, and job satisfaction among librarians in private colleges and universities in Iloilo City
(2022-12)
This descriptive- correlational research aimed at investigating the relationships of work attitude, organizational commitment and job satisfaction among the librarians in private Colleges and Universities in Iloilo City. ...