scholarly journals On a new Sheffer class of polynomials related to normal product distribution

2019 ◽  
Vol 98 ◽  
pp. 51-71
Author(s):  
E. Azmoodeh ◽  
D. Gasbarra
Keyword(s):  
Product Distribution ◽  
Normal Product

scholarly journals A Natural Origin of Life

2018 ◽  
Author(s):  
Timothy R Stout ◽  
George Matzko
Keyword(s):  
Small Molecules ◽  
Law Of Large Numbers ◽  
Product Distribution ◽  
Single Step ◽  
Initial Composition ◽  
Normal Product ◽  
Root Cause ◽  
Murchison Meteorite ◽  
Large Numbers ◽  
Subsequent Step

Prebiotic processes naturally randomize their feedstock. This has resulted in the failure of every experimentally tested hypothetical step in abiogenesis beginning with the 1953 Miller-Urey Experiment and continuing to the present. Not a single step has been demonstrated which starts with appropriate supply chemicals, operates on the chemicals with a prebiotic process, and yields new chemicals that represent progress towards life and which can also be used in a subsequent step as produced. Instead, the products of thousands of experiments over more than six decades consistently exhibit either increased randomization over their initial composition or no change. We propose the following hypothesis of Abiogenetic Randomization as the root cause for most if not all of the failures: 1) prebiotic processes naturally form many different kinds of products; life requires a few very specific kinds. 2) The needs of abiogenesis spatially and temporally are not connected to and do not change the natural output of prebiotic processes. 3) Prebiotic processes naturally randomize feedstock. A lengthy passage of time only results in more complete randomization of the feedstock, not eventual provision of chemicals suitable for life. The Murchison meteorite provides a clear example of this. 4) At each hypothetical step of abiogenesis, the ratio of randomized to required products proves fatal for that step. 5. The statistical law of large numbers applies, causing incidental appearances of potentially useful products eventually to be overwhelmed by the overall, normal product distribution. 6) The principle of emergence magnifies the problems: the components used in the later steps of abiogenesis become so intertwined that single-step first appearance of the entire set is required. Small molecules are not the answer. Dynamic self-organization requires from the beginning large proteins for replication, metabolism and active transport. Many steps across the entire spectrum of abiogenesis are examined, showing how the hypothesis appears to predict the observed problems qualitatively. There is broad experimental support for the hypothesis at each observed step with no currently known exceptions.

Use of thermomechanical pulp fibers from waste woods for making eco-friendly cushioning material

TAPPI Journal ◽  
2010 ◽  
Vol 9 (7) ◽  
pp. 15-21 ◽  
Author(s):  
JI-YOUNG LEE ◽  
CHUL-HWAN KIM ◽  
JEONG-MIN SEO ◽  
HO-KYUNG CHUNG ◽  
KYUNG-KIL BACK ◽  
...  
Keyword(s):  
Impact Test ◽  
Product Distribution ◽  
Expanded Polystyrene ◽  
Thermomechanical Pulp ◽  
Fiber Structure ◽  
Pulp Fibers ◽  
Cationic Starch ◽  
Thermal Insulating ◽  
Surface Sizing ◽  
The Impact

Eco-friendly cushioning materials were made with thermomechanical pulps (TMPs) from waste woods collected from local mountains in Korea, using a suction-forming method without physical pressing. The TMP cushions had superior shock-absorbing performance, with lower elastic moduli than expanded polystyrene (EPS) or molded pulp. Even though the TMP cushions made using various suction times had many voids in their inner fiber structure, their apparent densities were a little higher than that of EPS and much lower than that of molded pulp. The addition of cationic starch contributed to an increase in the elastic modulus of the TMP cushions without increasing the apparent density, an effect which was different from that of surface sizing with starch. In the impact test, the TMP cushions showed a more ductile pattern than the brittle EPS. The porosity of the TMP cushion was a little less than that of EPS and much greater than that of molded pulp. The porous structure of the TMP cushions contributed to their excellent thermal insulating capacity, which was equivalent to that of EPS. In summary, the TMP packing cushions showed great potential for surviving external impacts during product distribution.

An NBO-TS predictive approach for torquoselectivity of ring opening in 3-substituted cyclobutenes

2017 ◽  
Author(s):  
Arpita Yadav ◽  
Dasari L V K Prasad ◽  
Veejendra Yadav
Keyword(s):  
Transition State ◽  
Ring Opening ◽  
Natural Bond Orbital ◽  
Theoretical Calculations ◽  
Lone Pair ◽  
Product Distribution ◽  
Acceptor Substituent ◽  
Important Contributor ◽  
Predictive Approach ◽  
Donor Substituent

<p>The torquoselectivity, the inward or outward ring opening of 3-substituted cyclobutenes, is conventionally guided by the donor and/or acceptor ability of the substituent (S). It is typically predicted by estimating the respective ring opening transition state (TS) barriers. While there is no known dissent in regard to the outward rotation of electron-rich substituents from the approaches of TS calculations, the inward rotation was predicted for some electron-accepting substituents and outward for others. To address this divergence in predicting the torquoselectivity, we have used reliable orbital descriptors through natural bond orbital theoretical calculations and demonstrated that (a) interactions <i>n</i><i><sub>S</sub></i>→s*<sub>C3C4</sub> for a lone pair containing substituent, s<sub>S</sub>→s*<sub>C3C4</sub> for a s-donor substituent, s<sub>C3C4</sub>→p*<sub>S</sub> for a resonance-accepting substituent and s<sub>C3C4</sub>→s*<sub>S</sub> for a s-acceptor substituent constitute the true electronic controls of torquoselectivity, and (b) reversibility of the ring opening event is an additional important contributor to the observed product distribution.</p>

Penerbitan buku ilmiah daring berbasis open monograph press (OMP)

2020 ◽  
Vol 16 (2) ◽  
pp. 155-169
Author(s):  
Dhevi Enlivena Irene Restia Mahelingga
Keyword(s):  
Book Publishing ◽  
Scientific Publication ◽  
Product Distribution ◽  
Qualitative Approach ◽  
Primary Data ◽  
Access To Information ◽  
Online Publishing ◽  
Publishing Process ◽  
Publication Process ◽  
Academic Publications

Introduction. There has been limited discussion on Open Monograph Press (OMP) although its  potential is recognized to support academic publications in Indonesia. This is due to the lack of access to information and dissemination of OMP by academic publishers that have implemented OMP in their publication process. Data Collection Method. This paper used a qualitative approach by starting the elaboration publication process in Lembaga Ilmu Pengetahuan Indonesia (LIPI) Press. This paper examined how OMP-based online publishing system is able to accommodate book publishing process in LIPI Press. Primary data in this study was collected through records of the user interface of the online page of LIPI Press which uses OMP. Data Analysis. The data was analyzed by using  a descriptive-analytic approach. Results and Discussions. OMP is useful not only to accommodate all roles and processes of scientific publication but also to accommodate the publisher's need for a catalog website. OMP metadata can be indexed by Google Scholar and can be a helpful tool for product distribution. Conclusion. OMP is suggested to become a standard in publication process.

Novel Products in the CO2-Laser Induced Reaction of Trichloroethylene

1995 ◽  
Vol 60 (1) ◽  
pp. 104-114 ◽  
Author(s):  
Boyd L. Earl ◽  
Richard L. Titus
Keyword(s):  
Irradiation Time ◽  
Product Distribution ◽  
Incident Power ◽  
Cell Geometry ◽  
Reaction Conditions ◽  
Peak Areas ◽  
Induced Decomposition ◽  
Nmr Methods ◽  
Induced Reaction ◽  
Novel Products

Previous reports on the thermal or CO2-laser induced decomposition of trichloroethylene have identified only one condensible product, hexachlorobenzene (in addition to HCl and mono- and dichloroacetylene). We have found that trichloroethylene vapor exposed to cw irradiation on the P(24) line of the (001 - 100) band of the CO2 laser at incident power levels from 8 - 17 W produces numerous products, of which the 13 major ones have been identified using IR, GC/MS, GC/FTIR, and NMR methods. All of these products have 4, 6, or 8 carbons, are highly unsaturated, and are completely chlorinated or contain a single hydrogen. C4HCl5 and C6Cl6 isomers (three of each) account for S 55% to 85% of total products (based on peak areas in the total ion chromatograms in GC/MS runs), depending on reaction conditions. In addition to characterizing the products, we discuss the dependence of the product distribution on laser power, irradiation time, and cell geometry, and we outline a possible mechanism.

Peroxisomal-mitochondrial oxidation in a rodent model of obesity-associated insulin resistance

2007 ◽  
Vol 293 (4) ◽  
pp. E986-E1001 ◽  
Author(s):  
Robert C. Noland ◽  
Tracey L. Woodlief ◽  
Brian R. Whitfield ◽  
Steven M. Manning ◽  
Jasper R. Evans ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Clinical Importance ◽  
Product Distribution ◽  
Zucker Rats ◽  
Acid Oxidation ◽  
Insulin Resistant ◽  
Malonyl Coa ◽  
Skeletal Muscle Lipid ◽  
Mitochondrial Oxidation ◽  
Cpt I

Peroxisomal oxidation yields metabolites that are more efficiently utilized by mitochondria. This is of potential clinical importance because reduced fatty acid oxidation is suspected to promote excess lipid accumulation in obesity-associated insulin resistance. Our purpose was to assess peroxisomal contributions to mitochondrial oxidation in mixed gastrocnemius (MG), liver, and left ventricle (LV) homogenates from lean and fatty ( fa/fa) Zucker rats. Results indicate that complete mitochondrial oxidation (CO2production) using various lipid substrates was increased approximately twofold in MG, unaltered in LV, and diminished ∼50% in liver of fa/fa rats. In isolated mitochondria, malonyl-CoA inhibited CO2production from palmitate 78%, whereas adding isolated peroxisomes reduced inhibition to 21%. These data demonstrate that peroxisomal products may enter mitochondria independently of CPT I, thus providing a route to maintain lipid disposal under conditions where malonyl-CoA levels are elevated, such as in insulin-resistant tissues. Peroxisomal metabolism of lignoceric acid in fa/fa rats was elevated in both liver and MG (LV unaltered), but peroxisomal product distribution varied. A threefold elevation in incomplete oxidation was solely responsible for increased hepatic peroxisomal oxidation (CO2unaltered). Alternatively, only CO2was detected in MG, indicating that peroxisomal products were exclusively partitioned to mitochondria for complete lipid disposal. These data suggest tissue-specific destinations for peroxisome-derived products and emphasize a potential role for peroxisomes in skeletal muscle lipid metabolism in the obese, insulin-resistant state.

scholarly journals How Surface Species Drive Product Distribution during Ammonia Oxidation: An STM and Operando APXPS Study

ACS Catalysis ◽  
2021 ◽  
pp. 8261-8273
Author(s):  
Oleksii Ivashenko ◽  
Niclas Johansson ◽  
Christine Pettersen ◽  
Martin Jensen ◽  
Jian Zheng ◽  
...  
Keyword(s):  
Ammonia Oxidation ◽  
Product Distribution ◽  
Surface Species

Emphasizing Choice and Autonomy in Personal Hygiene, Menstrual Health, and Sexual Health Product Distribution to People Experiencing Homelessness in Atlanta, Georgia During COVID-19

2021 ◽  
pp. 152483992110249
Author(s):  
April M. Ballard ◽  
Alison T. Hoover ◽  
Ana V. Rodriguez ◽  
Bethany A. Caruso
Keyword(s):  
Sexual Health ◽  
The United States ◽  
Product Distribution ◽  
Health Needs ◽  
Economic Conditions ◽  
Personal Hygiene ◽  
Small Scale ◽  
Support Organizations ◽  
Menstrual Health ◽  
Do So

The Dignity Pack Project is a small-scale, crisis-oriented supply chain in Atlanta, Georgia, designed to meet the acute personal hygiene,menstrual health, and sexual health needs of people experiencing homelessness (PEH). It was organized in response to conditions during the COVID-19 pandemic that continue to illuminate and exacerbate the distinct and complex challenges PEH face when trying to meet their basic needs and maintain their health. In addition to being particularly vulnerable to COVID-19 due to underlying conditions, crowding, and shared living spaces, the pandemic makes it harder for PEH to access already scant resources. Specifically, shelters across the United States have experienced outbreaks and, as a result, have reduced capacity or closed completely. Social support organizations have paused or restricted services. Donations and volunteering have decreased due to economic conditions and social distancing requirements. This practice note describes how we integrated feedback from PEH at the outset of the Dignity Pack project—and continue to do so—enabling the development of a pragmatic, humanistic outreach model that responds to the evolving needs of PEH as pandemic conditions and the seasons change. We detail how we established complementary partnerships with local organizations and respond to critical insights provided by PEH. We offer lessons and recommendations driven by the needs and preferences of PEH.

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