Latest Research on Distance Learning : July 21

Editor NetZen July 24, 2021July 24, 2021Arts & EducationArts & Education Leave a comment

[1] Issues in Distance Learning This review of literature and research into the effectiveness of distance education systems deals with a number of factors which affect their success or failure. These include the influence of distance learning theory upon instructional design and delivery, redefining the roles of partners in distance education teams, media selection, technology adoption, change implementation, methods and strategies to increase interactivity, inquiry, and active learning, learner characteristics and modes of learning, teacher mediation and learner support, operational … Continue reading “Latest Research on Distance Learning : July 21”

Latest Research on Vacuum Space : Jul 21

Editor NetZen July 24, 2021July 24, 2021Science & TechnologyScience & Technology Leave a comment

[1] Event Horizons in Static Vacuum Space-Times The following theorem is established. Among all static, asymptotically flatvacuum space-times with closed simply connected equipotentialsurfaces g00=constant, the Schwarzschild solution is the only one whichhas a nonsingular infinite-red-shift surface g00=0. Thus there exists nostatic asymmetric perturbation of the Schwarzschild manifold due to internalsources (e.g., a quadrupole moment) which will preserve a regular eventhorizon. Possible implications of this result for asymmetric gravitationalcollapse are briefly discussed. [2] Event horizons in static scalar-vacuum space-times The following theorem is … Continue reading “Latest Research on Vacuum Space : Jul 21”

News Update on Secondary Schools : May 21

Editor NetZen May 7, 2021EducationEducation Leave a comment

[1] The Problem of Underqualified Teachers in American Secondary Schools This article presents the results of a research project on the phenomenon of out-of-field teaching in American high schools–teachers teaching subjects for which they have little education or training. Over the past couple of years, the problem of out-of-field teaching has become a prominent topic in the realm of educational policy and reform, and the results of this research have been widely reported and commented on both by education policymakers … Continue reading “News Update on Secondary Schools : May 21”

News Update on Mineral Supplement : May 21

Editor NetZen May 7, 2021Nutrition & FoodNutrition & Food Leave a comment

[1] Vitamin/Mineral Supplement Use among Athletes: A Review of the Literature Vitamin/mineral supplements are often used by athletes as ergogenic aids to improve performance. This paper reviews studies of the prevalence, patterns, and explanations for vitamin/mineral supplement use among athletes. Fifty-one studies provided quantitative prevalence data on 10,274 male and female athletes at several levels of athletic participation in over 15 sports. The overall mean prevalence of athletes’ supplement use was 46%. Most studies reported that over half of the … Continue reading “News Update on Mineral Supplement : May 21”

Latest News on Newton’s Law : May 21

Editor NetZen May 6, 2021PhysicsPhysics Leave a comment

[1] On the origin of gravity and the laws of Newton Starting from first principles and general assumptions we present a heuristic argument that shows that Newton’s law of gravitation naturally arises in a theory in which space emerges through a holographic scenario. Gravity is identified with an entropic force caused by changes in the information associated with the positions of material bodies. A relativistic generalization of the presented arguments directly leads to the Einstein equations. When space is emergent … Continue reading “Latest News on Newton’s Law : May 21”

News Update on Power Generator : May 21

Editor NetZen May 6, 2021PhysicsPhysics Leave a comment

[1] MEMS power generator with transverse mode thin film PZT A thin film lead zirconate titanate, Pb(Zr,Ti)O3 (PZT), MEMS power generating device is developed. It is designed to resonate at specific frequencies from an external vibrational energy source, thereby creating electrical energy via the piezoelectric effect. Our cantilever device is designed to have a flat structure with a proof mass added to the end. The Pt/Ti top electrode is patterned into an interdigitated shape on top of the sol–gel-spin coated PZT thin film in order to employ the d33 mode of … Continue reading “News Update on Power Generator : May 21”

Latest Research News on Spleen : May 21

Editor NetZen May 5, 2021AgricultureAgriculture Leave a comment

[1] Structure and function of the spleen The spleen combines the innate and adaptive immune system in a uniquely organized way. The structure of the spleen enables it to remove older erythrocytes from the circulation and leads to the efficient removal of blood-borne microorganisms and cellular debris. This function, in combination with a highly organized lymphoid compartment, makes the spleen the most important organ for antibacterial and antifungal immune reactivity. A better understanding of the function of this complex organ … Continue reading “Latest Research News on Spleen : May 21”

Latest Research on Tomato Seedling : May 21

Editor NetZen May 5, 2021AgricultureAgriculture Leave a comment

[1] A humic acid improves growth of tomato seedling in solution culture The effects of humic acid (HA) on nutrient accumulation and growth of tomato seedlings were evaluated in a solution of limited nutrient availability in a greenhouse. HA additions were made to the nutrient solution at rates of 0, 640, 1280, or 2560 mg/L. The addition of 1280 mg/L HA produced significant increases in shoot accumulation of P, K, Ca, Mg, Fe, Mn, and Zn as well as increased … Continue reading “Latest Research on Tomato Seedling : May 21”

Latest News on Aloe Vera : May 21

Editor NetZen May 3, 2021BiochemistryBiochemistry Leave a comment

[1] Aloe vera We review the scientific literature regarding the aloe vera plant and its products. Aloe vera is known to contain several pharmacologically active ingredients, including a carboxypeptidase that inactivates bradykinin in vitro, salicylates, and a substance(s) that inhibits thromboxane formation in vivo. Scientific studies exist that support an antibacterial and antifungal effect for substance(s) in aloe vera. Studies and case reports provide support for the use of aloe vera in the treatment of radiation ulcers and stasis ulcers … Continue reading “Latest News on Aloe Vera : May 21”

News Update on Medicinal Plant : May 21

Editor NetZen May 3, 2021Medicinal PlantsMedicinal Plants Leave a comment

[1] A review of the antioxidant potential of medicinal plant species Some researchers suggest that two-thirds of the world’s plant species have medicinal value; in particular, many medicinal plants have great antioxidant potential. Antioxidants reduce the oxidative stress in cells and are therefore useful in the treatment of many human diseases, including cancer, cardiovascular diseases and inflammatory diseases. This paper reviews the antioxidant potential of extracts from the stems, roots, bark, leaves, fruits and seeds of several important medicinal species. Synthetic antioxidants such as butylated … Continue reading “News Update on Medicinal Plant : May 21”