Effects of Random Migration on the Growth of the Population of a Biological System

Abstract Conventional wastewater parameters are accepted as inadequate estimates of the condition of activated sludge but numerous other indices have been suggested as specific measurements of the activity and viability of the biomass. Literature in the related fields of microbiology and biochemistry were reviewed in order to select the most appropriate activity parameters for application to a heterogeneous biological material. Modified analytical methods were applied to a well-controlled biological system containing a single predominant bacterial species to evaluate the relative merit of each as an indicator of viability and activity. The potential of each parameter in a complex heterogeneous system was determined by monitoring each index in a bench activated sludge system. The predominant culture studies indicated that the ATP content of the biomass and the dehydrogenase activity were potential indicators of cell viability in a simple system. However, in the complex activated sludge system, only the ATP content showed significant correlation to the organic carbon removal rate.

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ALLELOPATHIC EFFECTS OF PARTHENIUM HYSTEROPHORUS ON GERMINATION OF SORGHUM SEEDS

Scholarly Research Journal for Humanity Science & English Language ◽

10.21922/srjhsel.v6i26.11391 ◽

2018 ◽

Vol 6 (26) ◽

Author(s):

Jitendra Rajpoot

Keyword(s):

Biological System ◽

Growth And Development ◽

Plant Virus ◽

Evolutionary Origin ◽

Plant Interactions ◽

Biological Organization ◽

Plant Soil ◽

System A ◽

Allelopathic Effects ◽

Plant Plant

International Allelopathy Society has redefined Allelopathy as any process involving secondary metabolities produced by plants, algae, bacteria, fungi and viruses that influences the growth and development of agricultural and biological system; a study of the functions of secondary metabolities, their significance in biological organization, their evolutionary origin and elucidation of the mechanisms involving plant-plant, plant-microorganisms, plant-virus, plant-insect, plant-soil-plant interactions.

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The need to study human milk as a biological system

American Journal of Clinical Nutrition ◽

10.1093/ajcn/nqab075 ◽

2021 ◽

Author(s):

Parul Christian ◽

Emily R Smith ◽

Sun Eun Lee ◽

Ashley J Vargas ◽

Andrew A Bremer ◽

...

Keyword(s):

Human Milk ◽

Biological System ◽

System Development ◽

Full Range ◽

Milk Composition ◽

Postnatal Period ◽

Research Strategy ◽

Optimal Timing ◽

Conceptual Approach ◽

Technological Advances

ABSTRACT Critical advancement is needed in the study of human milk as a biological system that intersects and interacts with myriad internal (maternal biology) and external (diet, environment, infections) factors and its plethora of influences on the developing infant. Human-milk composition and its resulting biological function is more than the sum of its parts. Our failure to fully understand this biology in a large part contributes to why the duration of exclusive breastfeeding remains an unsettled science (if not policy). Our current understanding of human-milk composition and its individual components and their functions fails to fully recognize the importance of the chronobiology and systems biology of human milk in the context of milk synthesis, optimal timing and duration of feeding, and period of lactation. The overly simplistic, but common, approach to analyzing single, mostly nutritive components of human milk is insufficient to understand the contribution of either individual components or the matrix within which they exist to both maternal and child health. There is a need for a shift in the conceptual approach to studying human milk to improve strategies and interventions to support better lactation, breastfeeding, and the full range of infant feeding practices, particularly for women and infants living in undernourished and infectious environments. Recent technological advances have led to a rising movement towards advancing the science of human-milk biology. Herein, we describe the rationale and critical need for unveiling the multifunctionality of the various nutritional, nonnutritional, immune, and biological signaling pathways of the components in human milk that drive system development and maturation, growth, and development in the very early postnatal period of life. We provide a vision and conceptual framework for a research strategy and agenda to change the field of human-milk biology with implications for global policy, innovation, and interventions.

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Fluorescent Probes for Live Cell Thiol Detection

Molecules ◽

10.3390/molecules26123575 ◽

2021 ◽

Vol 26 (12) ◽

pp. 3575

Author(s):

Shenggang Wang ◽

Yue Huang ◽

Xiangming Guan

Keyword(s):

Fluorescent Probes ◽

Biological System ◽

High Sensitivity ◽

Intracellular Distribution ◽

Live Cell ◽

Live Cells ◽

High Demand ◽

Non Invasive

Thiols play vital and irreplaceable roles in the biological system. Abnormality of thiol levels has been linked with various diseases and biological disorders. Thiols are known to distribute unevenly and change dynamically in the biological system. Methods that can determine thiols’ concentration and distribution in live cells are in high demand. In the last two decades, fluorescent probes have emerged as a powerful tool for achieving that goal for the simplicity, high sensitivity, and capability of visualizing the analytes in live cells in a non-invasive way. They also enable the determination of intracellular distribution and dynamitic movement of thiols in the intact native environments. This review focuses on some of the major strategies/mechanisms being used for detecting GSH, Cys/Hcy, and other thiols in live cells via fluorescent probes, and how they are applied at the cellular and subcellular levels. The sensing mechanisms (for GSH and Cys/Hcy) and bio-applications of the probes are illustrated followed by a summary of probes for selectively detecting cellular and subcellular thiols.

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Biodegradable Fluorescent SiO2@MnO2-Based Sequence Strategy for Glutathione Sensing in a Biological System and Synergistic Theragnostics to Cancer Cells

ACS Sustainable Chemistry & Engineering ◽

10.1021/acssuschemeng.0c08177 ◽

2021 ◽

Vol 9 (7) ◽

pp. 2770-2783

Author(s):

Yuan Zhang ◽

Dong Wang ◽

Yating Meng ◽

Wenjing Lu ◽

Shaomin Shuang ◽

...

Keyword(s):

Cancer Cells ◽

Biological System

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Epigenetic transgenerational inheritance, Gametogenesis and Germline Development

Biology of Reproduction ◽

10.1093/biolre/ioab085 ◽

2021 ◽

Author(s):

Millissia Ben Maamar ◽

Eric E Nilsson ◽

Michael K Skinner

Keyword(s):

Developmental Biology ◽

Environmental Factors ◽

Biological System ◽

Developmental Stages ◽

Primordial Germ Cell ◽

Cell Types ◽

Transgenerational Inheritance ◽

Germline Development ◽

Current Review

Abstract One of the most important developing cell types in any biological system is the gamete (sperm and egg). The transmission of phenotypes and optimally adapted physiology to subsequent generations is in large part controlled by gametogenesis. In contrast to genetics, the environment actively regulates epigenetics to impact the physiology and phenotype of cellular and biological systems. The integration of epigenetics and genetics is critical for all developmental biology systems at the cellular and organism level. The current review is focused on the role of epigenetics during gametogenesis for both the spermatogenesis system in the male and oogenesis system in the female. The developmental stages from the initial primordial germ cell through gametogenesis to the mature sperm and egg are presented. How environmental factors can influence the epigenetics of gametogenesis to impact the epigenetic transgenerational inheritance of phenotypic and physiological change in subsequent generations is reviewed.

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The Systemic Theory of Living Systems and Relevance to CAM

Evidence-based Complementary and Alternative Medicine ◽

10.1093/ecam/neh068 ◽

2005 ◽

Vol 2 (1) ◽

pp. 13-18 ◽

Cited By ~ 15

Author(s):

José A. Olalde Rangel

Keyword(s):

Biological System ◽

Treatment Strategy ◽

Living Systems ◽

State Of Health ◽

Total Entropy ◽

First Line ◽

Available Energy ◽

Systemic Theory ◽

Or Organization ◽

Normal Health

The Systemic Theory of Living Systems is being published in several parts in eCAM. The theory is axiomatic. It originates from the phenomenological idea that physiological health is based on three factors: integrity of its structure or organization,O, functional organic energy reserve,E, and level of active biological intelligence,I. From the theory is derived a treatment strategy called Systemic Medicine (SM). This is based on identifying and prescribing phytomedicines and/or other medications that strengthen each factor. Energy-stimulating phytomedicines increase available energy and decrease total entropy of an open biological system by providing negative entropy. The same occurs with phytomedicines that act as biological intelligence modulators. They should be used as the first line of treatment in all ailments, since all pathologies, by definition, imply a higher than normal organic entropy. SM postulates that the state of health,H, of an individual, is effectively equal to the product of the strength of each factorH=O×E×I. SM observes that when all three factors are brought back to ideal levels, patients' conditions begin the recovery to normal health.

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