A three-dimensional environmental monitoring system for the production of marine gas hydrates

1.Objectives As about 99% of the natural gas hydrate (NGH)resources are stored on the seafloor,it is inevitable that in its process of exploration and production,there will be geohazards such as methane leakage,seabed subsidence,ecosystem damage and even landslide.Therefore,a set of integrated systems for environmental monitoring in the process of NGH production has been proposed in the consideration of environmental disasters that may arise in the process of hydrate production.

Research and Application of Multi-Dimensional and Three-Dimensional Teaching in Geriatric Nursing Teaching in the Context of Mass Entrepreneurship and Innovation

Purpose:Study the specific application effect of multi-dimensional and three-dimensional teaching in Geriatric Nursing teaching in the context of mass entrepreneurship and innovation.Methods:Respectively select 80 nursing undergraduates of 2015 and 80 nursing undergraduates of 2014 in our school as the research object of the experimental group and the control group.In terms of Geriatric Nursing teaching,nursing students in the control group adopt traditional classroom teaching methods to carry out,while students in the experimental group adopt multi-dimensional and three-dimensional teaching in the context of mass entrepreneurship and innovation.Then observe and compare the geriatric nursing knowledge scoring as well as theory and practice assessment results in the two groups taught with different methods.Results:It's obvious that the scoring of nursing students in the experimental group is higher than those in the control group in respect of geriatric nursing knowledge,and statistical significance exists in the between-group differences(P<0.05).The nursing students in the experimental group perform obviously better than those in the control group in terms of the results of theory,practice and comprehensive assessment as well as total score,and statistical significance exists in the between-group differences(P<0.05).Conclusion:Implementing Geriatric Nursing teaching for higher education nursing undergraduates with multi-dimensional and three-dimensional teaching in the context of mass entrepreneurship and innovation can remarkably improve nursing students'cognitive level in geriatric nursing as well as their mastery degree of theoretical,practical and comprehensive knowledge.Thus,the multi-dimensional and three-dimensional teaching mode in the context of mass entrepreneurship and innovation makes 80 nursing undergraduates of 2015 in our school direct beneficiaries,which could be popularized and applied in medical colleges.

Experimental and measured research on three-dimensional deformation law of gas drainage borehole in coal seam

Using self-researched gas drainage borehole stability dynamic monitoring device, three-dimensional deformation characteristics of borehole under steady vertical load were researched experimentally and systematically. This research indicated that under the action of steady loading, the mechanical deformation path of the simulated gas drainage borehole is gradually complicated, and the decay of the borehole circumferential strain is an important characterization of the prediction and early warning of borehole instability and collapse. The horizontal position of borehole occurs compressive strain, and the vertical of which occurs tensile strain under the action of vertical stress. At the initial stage of loading, the vertical strain is more sensitive than that in the horizontal direction. After a certain period of time, the horizontal strain is gradually higher than the vertical one, and the intersection of the borehole horizontal diameter and the hole wall is the stress concentration point. With the increase of the depth of hole, the strain shows a gradual decay trend as a whole, and the vertical strain decays more observably, but there is no absolute position correlation between the amount of strain decay and the increase in borehole depth,and the area within 1.5 times the orifice size is the borehole stress concentration zone.

Philosophical Reflection Over the Origin of the Universe

The world today is in urgent need to unveil the Truth of the Universe to guide the future of humankind.This paper serves as an introductory work to the author’s forthcoming book Revelation and Reflection on Mankind by Modern Physics that examines great recent discoveries in physics and analyzes how it could be linked to philosophical ideologies passed down throughout history from the Axial Age,especially the Eastern philosophical thoughts.This paper also proposes a new cosmic model as a reference for the philosophy and science communities.Finally,this paper advocates for more attention on the Origin of philosophy.