Sexual Dimorphism in the Compound Eye of Rhagophthalmus ohbai (Coleoptera: Rhagophthalmidae): II. Physiology and Function of the Eye of the Male

T.F.S. Lau,N. Ohba,K. Arikawa,V.B. Meyer-Rochow 한국응용곤충학회 2007 Journal of Asia-Pacific Entomology Vol.10 No.1

The eyes of male and female Rhagophthalmus ohbai are of very different sizes and possess approximately 3000 and 35 facets, respectively. In the male eye one can distinguish a smaller dorsal region with 500 facets and a larger ventral one with ca. 1800. Ultrastructural differences between them have been described earlier in this journal (Lau and Meyer- Rochow, 2006). Electrophysiological recordings from the two eye areas have now revealed that the ventral region is maximally sensitive to light of 600 nm wavelength, while the dorsal eye region responds maximally to light of 540-560 nm wavelengths. In the dorsal eye region sensitivity to UV-radiation at around 360 nm wavelength, being twice as high as that of the ventral eye region, amounted to ca. one quarter of peak wavelength sensitivity. The regional differences in spectral sensitivity seem to be a reflection of the different tasks of the two eye regions: looking downward to see the yellow light emitted by a female, sensitivity towards longer wavelengths would be advantageous, but looking upward into the twilight sky, sensitivity to shorter wavelength would be a more appropriate adaptation.

Sexual Dimorphism in the Compound Eye of Rhagophthalmus ohbai (Coleoptera: Rhagophthalmidae): II. Physiology and Function of the Eye of the Male

Lau, T.F.S.,Ohba, N.,Arikawa, K.,Meyer-Rochow, V.B. Korean Society of Applied Entomology 2007 Journal of Asia-Pacific Entomology Vol.10 No.1

The eyes of male and female Rhagophthalmus ohbai are of very different sizes and possess approximately 3000 and 35 facets, respectively. In the male eye one can distinguish a smaller dorsal region with 500 facets and a larger ventral one with ca. 1800. Ultrastructural differences between them have been described earlier in this journal (Lau and Meyer-Rochow, 2006). Electrophysiological recordings from the two eye areas have now revealed that the ventral region is maximally sensitive to light of 600 nm wavelength, while the dorsal eye region responds maximally to light of 540-560 nm wavelengths. In the dorsal eye region sensitivity to UV-radiation at around 360 nm wavelength, being twice as high as that of the ventral eye region, amounted to ca. one quarter of peak wavelength sensitivity. The regional differences in spectral sensitivity seem to be a reflection of the different tasks of the two eye regions: looking downward to see the yellow light emitted by a female, sensitivity towards longer wavelengths would be advantageous, but looking upward into the twilight sky, sensitivity to shorter wavelength would be a more appropriate adaptation.

Managing Within a Creative Environment

Sarah A. Meyer 사단법인 한국브랜드디자인학회 2007 브랜드디자인학연구 Vol.5 No.1

Managing a complex system, such as a design group, is not a matter of facilitating a sequence of discrete steps. It involves the interaction of self-management, cooperative behavior, feedback, and flexibility in processes that orchestrate these elements to the benefit of organizational strategy and the development of specific projects. Sarah Meyer defines this approach and illustrates the significance of these issues with "in-the-trenches" commentary from design managers.

Toward Accounting for Sustainable Economic Develpment : Measurement Problems at Different Levels of Aggregation

Meyer, Peter B.,Yi, Yang Soo 한국국제지역사회개발학회 1999 地域社會開發學術誌 Vol.9 No.2

오늘날 "지속 가능한 개발(Sustainable Development)" 이라는 화두는 지역과 국가의 경제활동에 있어서 중요한 의제의 하나로 대두되고 있다. 그러나 "지속가능(Sustainability)"의 개념에 대한 정의와 측정에 대해서는 많은 논쟁이 오래 전부터 계속 되어왔다. 좁게는 지속가능의 범위를 경제적 활동영역에 국한 할 수도 있지만 지속 가능한 개발의 이념은 우리 인류의 경제적 활동 뿐만 아니라 자연자원을 포함한 인류전체의 복지를 포함한 모든 생태계의 조화로운 발전이 포함 되어야 한다. 본 논문은 기존의 국민총생산(GNP) 지표가 지속가능을 측정 하는 지표로 미흡하다는 점과 또 지속가능발전의 궁극적 목표인 국민복지를 제대로 반영하지 못한다는 것을 지적함과 동시에 "지속가능 (Sustainability)" 과 "국민복지 (Human-welfare)"의 측정에 있어서 4가지 중요한 구성요소로서 다양성(Diversity), 비 화폐적 경제활동(Non-monetized economic activity), 비 지속가능 활동의 수출(Export non-sustainability), 그리고 존재가치(Existence value; Non-use value,)를 제시하고자 하였다.

Attributes and references to honey bees (Insecta; Hymenoptera; Apidae) and their products in some Asian and Australian societies’ folkloristic domains

Meyer-Rochow V. B. 한국생태학회 2021 Journal of Ecology and Environment Vol.45 No.4

Background: References to insects in myths, stories, and idioms can be found in almost any culture, but with regard to references involving honey bee species in the Asia-Australian region, little information is available. Such references to bees can be highly informative by revealing attitudes of admiration, fear, ignorance, or even revulsion towards these insects. Results: The subject is briefly reviewed and examples of references to bees of selected cultural communities are given. Although folkloristic references to honey bees were found to be mostly positive highlighting fearlessness, cleverness, and industriousness of the bees, some also touch upon their ability to cause pain. Conclusions: Owing to the decreasing contacts and increasing alienization regarding insects generally, a plea is made to collect whatever information is still available about references to bees in songs, myths, stories, proverbs, and idioms and to compare such uses from different regions, e.g., North and South Korea. This would support other fields of research aiming to discover and to describe cultural relationships, migrations, and contacts between different peoples of the Asian/Australian region. Background: References to insects in myths, stories, and idioms can be found in almost any culture, but with regard to references involving honey bee species in the Asia-Australian region, little information is available. Such references to bees can be highly informative by revealing attitudes of admiration, fear, ignorance, or even revulsion towards these insects. Results: The subject is briefly reviewed and examples of references to bees of selected cultural communities are given. Although folkloristic references to honey bees were found to be mostly positive highlighting fearlessness, cleverness, and industriousness of the bees, some also touch upon their ability to cause pain. Conclusions: Owing to the decreasing contacts and increasing alienization regarding insects generally, a plea is made to collect whatever information is still available about references to bees in songs, myths, stories, proverbs, and idioms and to compare such uses from different regions, e.g., North and South Korea. This would support other fields of research aiming to discover and to describe cultural relationships, migrations, and contacts between different peoples of the Asian/Australian region.

21 세기 대학교육의 미래

Meyer, Hans 梨花女子大學校 史學硏究所 2000 梨花史學硏究 Vol.27 No.-

The impact of wafering on organic and inorganic surface contaminations

Meyer, S.,Wahl, S.,Timmel, S.,Kopge, R.,Jang, B.Y. New York] ; North-Holland 2016 APPLIED SURFACE SCIENCE - Vol.378 No.-

Beside the silicon feedstock material, the crystallization process and the cell processing itself, the wafer sawing process can strongly determine the final solar cell quality. Especially surface contamination is introduced in this process step because impurities from sawing meet with a virgin silicon surface which is highly reactive until the oxide layer is formed. In this paper we quantitatively analysed both, the organic and inorganic contamination on wafer surfaces and show that changes of process parameters during wafering may cause dramatic changes in surface purity. We present powerful techniques for the monitoring of wafer surface quality which is essential for the production of high efficiency and high quality solar cells.

IRRADIATION PERFORMANCE OF U-Mo MONOLITHIC FUEL

Meyer, M.K.,Gan, J.,Jue, J.F.,Keiser, D.D.,Perez, E.,Robinson, A.,Wachs, D.M.,Woolstenhulme, N.,Hofman, G.L.,Kim, Y.S. Korean Nuclear Society 2014 Nuclear Engineering and Technology Vol.46 No.2

High-performance research reactors require fuel that operates at high specific power to high fission density, but at relatively low temperatures. Research reactor fuels are designed for efficient heat rejection, and are composed of assemblies of thin-plates clad in aluminum alloy. The development of low-enriched fuels to replace high-enriched fuels for these reactors requires a substantially increased uranium density in the fuel to offset the decrease in enrichment. Very few fuel phases have been identified that have the required combination of very-high uranium density and stable fuel behavior at high burnup. U-Mo alloys represent the best known tradeoff in these properties. Testing of aluminum matrix U-Mo aluminum matrix dispersion fuel revealed a pattern of breakaway swelling behavior at intermediate burnup, related to the formation of a molybdenum stabilized high aluminum intermetallic phase that forms during irradiation. In the case of monolithic fuel, this issue was addressed by eliminating, as much as possible, the interfacial area between U-Mo and aluminum. Based on scoping irradiation test data, a fuel plate system composed of solid U-10Mo fuel meat, a zirconium diffusion barrier, and Al6061 cladding was selected for development. Developmental testing of this fuel system indicates that it meets core criteria for fuel qualification, including stable and predictable swelling behavior, mechanical integrity to high burnup, and geometric stability. In addition, the fuel exhibits robust behavior during power-cooling mismatch events under irradiation at high power.

Spine Surgical Procedures during Coronavirus Disease 2019 Pandemic: Is It Still Possible to Take Care of Patients? Results of an Observational Study in the First Month of Confinement

Meyer Mikael,Prost Solène,Farah Kaissar,Denis Jean-Baptiste,Dufour Henry,Blondel Benjamin,Fuentes Stéphane 대한척추외과학회 2020 Asian Spine Journal Vol.14 No.3

Study Design: Observational study.Purpose: The actual sanitary crisis led to a massive mobilization of the sanitary system toward intensive care units and management of coronavirus disease 2019 (COVID-19) patients. However, some patients still require spinal interventions. The present study aimed to assess the impact of the COVID-19 pandemic on spine surgical in a moderate COVID-19 cluster region.Overview of Literature: Previous studies have reported screening and management of patients with spinal conditions during the COVID-19 pandemic. However, to date, knowledge, no observational study on spine surgeries during the pandemic has not been reported.Methods: Between March 17, 2020 and April 17, 2020, information on spine surgical activity was prospectively collected at our institution. This surgical activity related to the first month of confinement in France was compared to the activity during the same period in 2019 to evaluate the impact of the COVID-19 pandemic on surgical activities.Results: In order to reduce the contamination rate of patients and medical staff during hospitalization, the spine department was completely reorganized. Non-urgent elective spine surgeries were cancelled. When considering the global amount of surgeries procedures during the first month of confinement, a decrease of almost 50% was observed in the number of surgical procedures. During the study period, 62 patients were eligible for spine surgery. The numbers of patients managed for tumor and infectious cases were stable, while a considerable reduction was observed in the number of trauma and degenerative cases. During the follow-up period, two patients were tested as COVID+ during the postoperative course, and no cases of medical or paramedical staff contamination were reported using polymerase chain reaction-testing.Conclusions: During the COVID-19 pandemic, it is possible to maintain spine surgical activity. Each surgical procedure must be discussed and organized with all the caregivers involved. Indications for surgery must be in line with the scientific guidelines and adapted to each healthcare facility.

腦血管血液凝塊의 溶解

Meyer, J.S. 주식회사 녹십자 1977 녹십자의보 Vol.5 No.3