JUMLAH SEL GOBLET PADA USUS PROKSIMAL DAN USUS DISTAL BELUT SAWAH (MONOPTERUS ALBUS)

JUMLAH SEL GOBLET PADA USUS PROKSIMAL DAN USUS DISTAL BELUT SAWAH (Monopterus albus)ABSTRAKPenelitian ini bertujuan mengetahui jumlah sel Goblet pada usus proksimal dan usus distal belut sawah (Monopterus albus). Penelitian ini menggunakan lima usus belut sawah yang berasal dari Desa Alur dua, Kecamatan Langsa Baro, Kota Langsa. Bagian yang diambil adalah usus proksimal dan distal yang berasal dari lima ekor belut sawah dan diamati menggunakan metode histologi eksplorasi. Sampel kemudian dibuat menjadi preparat histologi dan diwarnai dengan pewarnaan periodic acid-schiff (PAS). Parameter yang diamati pada penelitian ini adalah jumlah sel Goblet pada setiap 1000 sel absorptif usus proksimal dan usus distal belut sawah. Data penghitungan sel Goblet dianalisis menggunakan uji T. Dari hasil penelitian disimpulkan bahwa terdapat perbedaan jumlah sel Goblet pada usus proksimal dan usus distal belut sawah dengan jumlah sel Goblet pada usus proksimal lebih banyak daripada jumlah sel Goblet pada usus distal

Anisotropy and Magnetic Field Effects on the Entanglement of a Two Qubit Heisenberg \u3ci\u3eXY\u3c/i\u3e Chain

We investigate the entanglement of a two-qubit anisotropic Heisenberg XY chain in thermal equilibrium at temperature T in the presence of an external magnetic field B along the z axis. By means of the combined influences of anisotropic interactions and a magnetic field B, one is able to produce entanglement for any finite T, by adjusting the magnetic field strength. This contrasts with the isotropic interaction or the B = 0 cases, for which there is no entanglement above a critical temperature Tc that is independent of the external B field

Karakteristik Peredaman Getaran Konstruksi Model Jembatan untuk Pengembangan Sistem Diganosis Pola Gagal

In operation, the bridge structure is subjected to load variation both in the form of static load and dynamic load in variation of load intensity and frequency. In bridge structures made of steel structures, dynamic loading conditions can cause loosening of bolts, cracks and even structural failures. This paper describes the method of determining the damping bridge constant (c) by the logarithmic decrement calculation method of the vibration data generated by the impulse load. Furthermore the damping constant is used to calculate the vibration response equation of the structure along with the mass constant (m) and the stiffness of the structure (k). The mass constants are obtained by measurement whereas the stiffness constant of the structure is obtained by FEM modeling for open and closed structure models. The results of the analysis will be used to interpret the pattern of failed structures in the development of the diagnostic system. The calculation of damping constant for open and closed model is 0.07556 and 0.12513, while mass and stiffness constant for closed and open model model is 18 kg and 9 kg and 9523809.524 N / m and 183486.2 N / m for stiffness constant

STUDY OF VERTICAL DISTANCE BETWEEN SUPRAORBITAL FORAMEN AND INFRAORBITAL FORAMEN AMONG NORTH INDIAN HUMAN DRY SKULLS

Objectives: The aim of study was to document the positional distance of supraorbital foramen (SOF) in relation to Infraorbital foramen (IOF), which is necessary for periorbital procedures. Materials and Methods: A total of 72 dry human skulls of unknown age and gender from North India, were studied. In each skull, distance between supraorbital and IOF was measured on both sides using a metal casing Vernier Caliper. Results: The mean distance between inferior wall of SOF and superior wall of IOF was found to be 40.81 (±6.66) mm on the left side and 40.91 (±6.15) mm on the right side. The overall value for both sides was 40.86 (±6.28) mm Conclusion: Precise knowledge about distance between supraorbital and IOF have important bearings on orbital and periorbital procedures. It provides guidance for anesthesiologists and facial surgeons

Graphene Exfoliation from HOPG Using the Difference in Binding Energy between Graphite, Graphene and a Substrate

Since its discovery in 2004, the graphene global market had a huge/considerable growth. Such growth can be explained by the use of graphene in specific or targeted applications where it has a huge and clear advantage. Although graphene is growing and has many possible applications, its market fraction is insignificant compared to the carbon global market. This is simply explained because the industry still has challenges related to quality, costs, reproducibility and safety. In this chapter, we propose a new look on the mechanical exfoliation. Basically, based on the difference in binding energy between graphite, graphene and a substrate we can exfoliate. The binding energy is the energy between materials at equilibrium. When 3 materials A-B-C are interacting, if the binding energy between A-B is superior to B-C, then by moving A in the opposite direction, B will follow. Based on that, we calculated the interaction potential between graphite, graphene and a substrate using the standard Lennard-Jones potential. Conventional substrates like silicon and silicon dioxide cannot exfoliate while gold, silver and copper can at 3.2 to 3.3 Å. This difference may be because of their higher atomic density and modest lattice parameter compared to others substrates used in this study

STUDY OF ACCESSORY SUPRAORBITAL FORAMEN IN NORTH INDIAN HUMAN SKULL

Objective: This research was aimed at telling the anatomical characteristics of the accessory supraorbital foramen (ASOF) in relation to the main supraorbital foramen (SOF), which is necessary in clinical situations that require regional surgical procedures. Methods: A total dedicated to the presence and location of 72 dry Indian adults of unknown age and sex were investigated. In each skull, the ASOF location was measured on both sides with a Vernier caliper metal case, with the SOF as the reference point. The total number of accessory foramen was also noted. Results: Accessory infraorbital foramens (IOFs) were seen only in 4.16% in our study and all seen were single in number. Half of those accessory foramen were present on medial and rest half were present on superomedial position as compared to the main IOF. Half among present accessory foramens were located at a distance of <2 mm and half were located at a distance of more than 2 mm. The mean location of accessory IOF was at 7.07 mm from main IOF. Conclusion: Knowledge of the anatomical characteristics of ASOF can have major effects on surgical and local anesthetic preparation blockage of the super orbital nerves. Additional guidance for surgeons may be provided with information on the foramens obtained from this study. The surgeons should note this during the nerve block as damage to either branch will lead to sensory impairment and incomplete blocking of the nerve

An African theological assessment of the pastoral response of the Roman Catholic Church to the socio-economic impact of the emerging Covid-19 pandemic in South Africa.

Masters Degree. University of KwaZulu-Natal, Pietermaritzburg.The Covid-19 pandemic has created unprecedented socio-economic hardships globally. The austerities brought about by Covid-19 has affected all sectors of society. Religious, economic, and political sectors have felt the ordeal of the humanitarian crisis. The emergence of the pandemic in South Africa in March 2020 has had a huge socio-economic impact, mostly on the poor and the less privileged in society. The pandemic has highlighted and exacerbated preexisting socio-economic inequalities in South Africa. These aggravated inequalities include corruption, unemployment, gender-based violence, and access to public healthcare. This study is an appraisal of the pastoral response of the Roman Catholic Church to the socio-economic impact of the emerging pandemic in South Africa. Central to this study is the contribution that African liberation theology offers, with particular emphasis on the philosophy of Ujamaa and the theology of Ubuntu, in strengthening the pastoral response of the Roman Catholic Church to the socio-economic impact of the emerging Covid-19 pandemic in the country. The methodology of See-Judge-Act is used in the study. The ‘see’ corresponds to the critical analysis of the socio-economic context of the emergence of the Covid-19 pandemic in South Africa. Conceptually, ‘judge’ uses the guiding categories of the philosophy of Ujamaa and the theology of Ubuntu to thematically analyse various pastoral documents published by the Roman Catholic Church in South Africa in its response to the emerging pandemic during the period March 2020 – March 2021. The ‘act’ elaborates the potential socially transformative actions from the principles of Ujamaa and Ubuntu that would render a more effective the pastoral response of the Roman Catholic Church to the socio-economic impact of the continuing Covid-19 pandemic in South Africa

Comparative study of the reliability of MPPT algorithms for the crystalline silicon photovoltaic modules in variable weather conditions

AbstractThe crystalline silicon photovoltaic modules are widely used as power supply sources in the tropical areas where the weather conditions change abruptly. Fortunately, many MPPT algorithms are implemented to improve their performance. In the other hand, it is well known that these power supply sources are nonlinear dipoles and so, their intrinsic parameters may vary with the irradiance and the temperature. In this paper, the MPPT algorithms widely used, i.e. Perturb and Observe (P&O), Incremental Conductance (INC), Hill-Climbing (HC), are implemented using Matlab®/Simulink® model of a crystalline silicon photovoltaic module whose intrinsic parameters were extracted by fitting the I(V) characteristic to experimental points. Comparing the simulation results, it is obvious that the variable step size INC algorithm has the best reliability than both HC and P&O algorithms for the near to real Simulink® model of photovoltaic modules. With a 60Wp photovoltaic module, the daily maximum power reaches 50.76W against 34.40W when the photovoltaic parameters are fixed. Meanwhile, the daily average energy is 263Wh/day against 195Wh/day