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Screening of Cellulolytic Bacteria from Biological Education and Research Forest Floor Andalas University, Indonesia
Conclusion:</b> We identified 2 potential isolates with a cellulolytic index value greater than 2, isolate UCB 4 with a cellulolytic index value of 3.5 and UCB 6 with a cellulolytic index value of 2.2.PMID:34486336 | DOI:10.3923/pjbs.2021.612.617
Source: Pakistan Journal of Biological Sciences: PJBS - September 6, 2021 Category: Biomedical Science Authors: Riri Kurnia Ilahi Fuji Astuti Febria Source Type: research

Global Minimum Search and Bonding Analysis of Tl2Hx and Tl3Hy (x=0-6; y=0-5) Series
Chemphyschem. 2023 Jun 2:e202300332. doi: 10.1002/cphc.202300332. Online ahead of print.ABSTRACTA remarkable comparison of Boron and Carbon hydrides can be expressed in extremely different bonding patterns and chemical reactivity, which ultimately leads to different areas of applications. Particularly, Carbon, based on classical two-center - two-electron bonds, gives rise to organic chemistry. Oppositely, Boron produces many exotic and somewhat non-intuitive compounds collectively called non-classical structures. It's natural to expect other elements of Group 13 to possess their own unusual bonding patterns; however, our k...
Source: Chemphyschem - June 2, 2023 Category: Chemistry Authors: Anton S Pozdeev Pavel Rublev Alexander I Boldyrev Yi Rao Source Type: research

Organic and institutional views of learning in Northern Uganda: Toward a theory of dichotomous education in postwar contexts
Publication date: July 2016 Source:International Journal of Educational Development, Volume 49 Author(s): Alison S. Willis A dichotomy of organic and institutional views of education emerged as a strong theme in a qualitative research study that was undertaken amongst primary school teachers in Northern Uganda. Teachers clearly conceptualised children’s learning in two categories − dependant upon culture and village life (termed organic education in this paper), and dependent upon organised schooling (termed institutional education). As the study progressed the complementary nature of these two categories became sal...
Source: International Journal of Educational Development - May 20, 2016 Category: Child Development Source Type: research

Identification of novel non-ionic, cationic, zwitterionic, and anionic polyfluoroalkyl substances using UPLC-TOF-MS(E) high-resolution parent ion search.
This study presents a time-of-flight mass spectrometry approach based on continuously interleaving scans at low and high collision energies (ToF-MS(E)) for the rapid identification and characterization of unknown PFASs. The MS(E) mode allowed for the simultaneous acquisition of full-spectrum accurate mass data of both parent and fragment ions in a single chromatographic run. Specific to PFASs, the hypothesis that PFASs can be selectively detected by the ToF-MS(E) high-resolution parent-ion search (HRPIS) of their characteristic fragments was confirmed with certified standards of 24 poly- and per-PFAS. After being validated...
Source: Analytica Chimica Acta - September 18, 2017 Category: Chemistry Authors: Xiao F, Golovko SA, Golovko MY Tags: Anal Chim Acta Source Type: research

Prebiotic Chemistry of HCN Tetramerization by Automated Reaction Search.
We report an explorative study based on automated reaction search method that avoid the cognitive bias in searching the chemical reaction space. We have discussed the chemical space of HCN dimer elaborately, and the important trimers and tetramers are discussed briefly. A component wise molecular fingerprint based methodology is proposed for identifying molecular similarity. Overall, we present four different thermal routes to cis/trans-2,3-diaminomaleonitrile and 4-aminoimidazole-5-carbonitrile, the important intermediates in the prebiotic chemistry. PMID: 29369429 [PubMed - as supplied by publisher]
Source: Chemistry - January 25, 2018 Category: Chemistry Authors: Nandi S, Bhattacharyya D, Anoop A Tags: Chemistry Source Type: research

Search of non-ionic surfactants suitable for micellar liquid chromatography.
Abstract Most reports in reversed-phase liquid chromatography (RPLC) with micellar mobile phases make use of the anionic sodium dodecyl sulfate. This surfactant masks efficiently the silanol groups that are the origin of the poor efficiencies and tailing peaks observed for basic compounds in conventional RPLC. However, it has the handicap of yielding excessive retention, which forces the addition of an organic solvent to reduce the retention times to practical values. Other surfactants, such as the non-ionic polyoxyethylene(23)lauryl ether (Brij-35), are rarely used. Brij-35 allows the separation of a large range ...
Source: Analytical and Bioanalytical Chemistry - June 19, 2018 Category: Chemistry Authors: Peris-García E, Rodríguez-Martínez J, Baeza-Baeza JJ, García-Alvarez-Coque MC, Ruiz-Angel MJ Tags: Anal Bioanal Chem Source Type: research

Controlling an organic synthesis robot with machine learning to search for new reactivity
Controlling an organic synthesis robot with machine learning to search for new reactivity, Published online: 18 July 2018; doi:10.1038/s41586-018-0307-8A robot instructed by a machine learning algorithm and coupled with real-time spectroscopic systems provides fast and accurate reaction outcome predictions and reactivity assessments, leading to the discovery of new reactions.
Source: Nature AOP - July 18, 2018 Category: Research Authors: Jaros ław M. Granda Liva Donina Vincenza Dragone De-Liang Long Leroy Cronin Source Type: research

Evaluation of Antimicrobial Activity of Four Organic Acids Used in Chicks Feed to Control Salmonella typhimurium: Suggestion of Amendment in the Search Standard.
Authors: El Baaboua A, El Maadoudi M, Bouyahya A, Belmehdi O, Kounnoun A, Zahli R, Abrini J Abstract Today, the general public has become increasingly aware of salmonellosis problems. Organic acids are known by their antimicrobial potential and commonly used for improving the quality of poultry feed. In this context, the present work evaluated the inhibitory effect of four organic acids, namely, acetic acid, citric acid, lactic acid, and tartaric acid, at different levels of contamination by Salmonella typhimurium. The neutralization of these organic acids in vitro and in the presence of one-day-old chick's organs ...
Source: International Journal of Microbiology - October 28, 2018 Category: Microbiology Tags: Int J Microbiol Source Type: research

The Diverse Search for Synthetic, Semisynthetic and Natural Product Antibiotics From the 1940s and Up to 1960 Exemplified by a Small Pharmaceutical Player
The 1940s and 1950s witnessed a diverse search for not just natural product antibiotics but also for synthetic and semisynthetic compounds. This review revisits this epoch, using the research by a Danish pharmaceutical company, LEO Pharma, as an example. LEO adopted a strategy searching for synthetic antibiotics toward specific bacterial pathogens, in particular Mycobacterium tuberculosis, leading to the discovery of a new derivative of a known drug. Work on penicillin during and after WWII lead to the development of associated salts/esters and a search for new natural product antibiotics. This led initially to no new, mar...
Source: Frontiers in Microbiology - June 11, 2020 Category: Microbiology Source Type: research