Probing the context of vulnerability: Zimbabwean migrant women’s experiences of accessing public health care in South Africa

South Africa has a professed inclusive health policy that articulates that everyone is entitled to have access to healthcare services, regardless of nationality and citizenship. However, several challenges exist for migrant women in South Africa, in accessing this health care. This paper, based on the experiences of Zimbabwean migrant women residing in Durban, focuses on their experiences of seeking and accessing health-care services in South Africa. Using a qualitative study design, semi-structured interviews were conducted with 22 purposively sampled female participants aged 25–49 years. This paper employs a structural-violence analysis to probe the underlying factors that make it challenging for Zimbabwean migrant women to access public health-care services in South Africa. The findings of this paper highlight that the lack of valid immigration documentation, often makes it challenging for participants to access services from public hospitals and clinics. The findings also reveal that the state of the South African public healthcare system predisposes migrant women to health risks

Inhibitory Activity and Docking Analysis of Antimalarial Agents from Stemona sp. toward Ferredoxin-NADP+ Reductase from Malaria Parasites.

Ferredoxin-NADP+ reductases (FNRs, EC 1.18.1.2) were found in the plastids of Plasmodium and have been considered as a target for the development of new antimalarial agents. Croomine, epi-croomine, tuberostemonine, javastemonine A, and isoprotostemonine are isolated alkaloids from the roots of Stemona sp. and their inhibitory effect on FNRs from Plasmodium falciparum (PfFNR) was investigated. Croomine showed the highest level of inhibition (33.9%) of electron transfer from PfFNR to PfFd, while tuberstemonine displayed the highest level of inhibition (55.4%) of diaphorase activity of PfFNR. Docking analysis represented that croomine is located at the middle position of PfFNR and PfFd. Croomine from S. tuberosa appeared to have potential as an antimalarial agent

A Model for the Prediction of Fiber Elasticity

A model is presented that enables the elastic properties of wood fibers to be estimated from the properties of its polymeric constituents, cellulose, hemicellulose, and lignin. The influence of the value of the axial stiffness of the cellulose crystal is demonstrated, its proper value being discussed in comparison with experimental data on fibers. The effects on fiber stiffness of the S2 fibril angle, the fibril angles of other layers, the crystallinity, and layer thicknesses are analyzed. The manner in which the effect of a variation in yield can be simulated by a change in shape factor of the reinforcing cellulose crystals is demonstrated, the cell wall thus being considered to be a discontinuous reinforced composite

Imaging Electronic Correlations in Twisted Bilayer Graphene near the Magic Angle

Twisted bilayer graphene with a twist angle of around 1.1{\deg} features a pair of isolated flat electronic bands and forms a strongly correlated electronic platform. Here, we use scanning tunneling microscopy to probe local properties of highly tunable twisted bilayer graphene devices and show that the flat bands strongly deform when aligned with the Fermi level. At half filling of the bands, we observe the development of gaps originating from correlated insulating states. Near charge neutrality, we find a previously unidentified correlated regime featuring a substantially enhanced flat band splitting that we describe within a microscopic model predicting a strong tendency towards nematic ordering. Our results provide insights into symmetry breaking correlation effects and highlight the importance of electronic interactions for all filling factors in twisted bilayer graphene.Comment: Main text 9 pages, 4 figures; Supplementary Information 25 page

Correlated insulator behaviour at half-filling in magic-angle graphene superlattices

Van der Waals (vdW) heterostructures are an emergent class of metamaterials comprised of vertically stacked two-dimensional (2D) building blocks, which provide us with a vast tool set to engineer their properties on top of the already rich tunability of 2D materials. 1 One of the knobs, the twist angle between different layers, plays a crucial role in the ultimate electronic properties of a vdW heterostructure and does not have a direct analog in other systems such as MBE-grown semiconductor heterostructures. For small twist angles, the moiré pattern produced by the lattice misorientation creates a long-range modulation. So far, the study of the effect of twist angles in vdW heterostructures has been mostly concentrated in graphene/hex a gonal boron nitride (h-BN) twisted structures, which exhibit relatively weak interlayer interaction due to the presence of a large bandgap in h-BN. 2-5 Here we show that when two graphene sheets are twisted by an angle close to the theoretically predicted ‘magic angle’, the resulting flat band structure near charge neutrality gives rise to a strongly-correlated electronic system . 6 These flat bands exhibit half-filling insulating phases at zero magnetic field, which we show to be a Mott-like insulator arising from electrons localized in the moiré superlattice. These unique properties of magic-angle twisted bilayer graphene (TwBLG) open up a new playground for exotic many-body quantum phases in a 2D platform made of pure carbon and without mag netic field. The easy accessibility of the flat bands, the electrical tunability, and the bandwidth tunability though twist angle may pave the way towards more exotic correlated systems, such as unconventional superconductors or quantum spin liquids

The Advancement of Biomaterials in Regulating Stem Cell Fate.

Stem cells are well-known to have prominent roles in tissue engineering applications. Embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs) can differentiate into every cell type in the body while adult stem cells such as mesenchymal stem cells (MSCs) can be isolated from various sources. Nevertheless, an utmost limitation in harnessing stem cells for tissue engineering is the supply of cells. The advances in biomaterial technology allows the establishment of ex vivo expansion systems to overcome this bottleneck. The progress of various scaffold fabrication could direct stem cell fate decisions including cell proliferation and differentiation into specific lineages in vitro. Stem cell biology and biomaterial technology promote synergistic effect on stem cell-based regenerative therapies. Therefore, understanding the interaction of stem cell and biomaterials would allow the designation of new biomaterials for future clinical therapeutic applications for tissue regeneration. This review focuses mainly on the advances of natural and synthetic biomaterials in regulating stem cell fate decisions. We have also briefly discussed how biological and biophysical properties of biomaterials including wettability, chemical functionality, biodegradability and stiffness play their roles

ANALISIS HARGA POKOK PRODUKSI SAPI POTONG DENGAN SISTEM PEMBIBITAN PADA ANGGOTA KTT TRI ANDINIREJO KELURAHAN BENER KECAMATAN TEGALREJO YOGYAKARTA

ABSTRAK Tujuan dari penelitian ini adalah untuk menganalisis biaya produksi ternak pada anggota kelompok tani ternak (KTT) Tri Andinirejo Yogyakarta, menganalisis faktor-faktor yang mempengaruhi harga pokok produksi (HPP) ternak pada anggota KTT Tri Andinirejo Yogyakarta dan menganalisis pendapatan anggota KTT Tri Andinirejo Yogyakarta. Penentuan lokasi ditentukan dengan metode purposive. Analisis data menggunakan analisis penentuan harga berbasis HPP dan analisis linier berganda. Berdasarkan hasil penelitian dapat diketahui bahwa secara serempak biaya hijauan, biaya konsentrat, biaya reproduksi, biaya pengobatan, jumlah ternak dan tenaga kerja berpengaruh nyata terhadap HPP KTT Tri Andinirejo. Secara parsial biaya hijauan, biaya konsentrat, biaya reproduksi dan tenaga kerja berpengaruh nyata terhadap HPP KTT Tri Andinirejo. Biaya pengobatan dan jumlah ternak tidak berpengaruh nyata terhadap HPP KTT Tri Andinirejo. Rata-rata pendapatan yang diperoleh 42 peternak KTT Tri Andinirejo per tahun sebesar Rp.1.577.089. Usaha ternak sapi potong dengan sistem pembibitan kurang menguntungkan. Kata Kunci :HPP, KTT,Pembibitan, Pendapatan,Sapi

Proceedings - 2020 IEEE 24th International Enterprise Distributed Object Computing Conference, EDOC 2020

This paper proposes an advanced, open architecture to augment streaming data platforms with both complex event processing (CEP) and predictive machine learning models. We leverage the power of CEP to preprocess streams using sophisticated event pattern expressions then present these preprocessed streams for downstream training and predictive computations. We demonstrate this approach using specific technology components

Histoplasma-associated inflammatory pseudotumour of the kidney mimicking renal carcinoma

A 56-year-old female, originally from Suriname, with an otherwise unremarkable previous medical history was found to have a renal mass highly suspicious for renal cancer for which a nephrectomy was performed. Within the kidney, a tumourous mass was found which, on histological examination, showed an inflammatory pseudotumour caused by Histoplasma capsulatum. Further investigations revealed an idiopathic CD4(+) lymphopenia. Mass lesions mimicking a malignant tumour caused by infection with Histoplasma have rarely been described. To the best of our knowledge, this is the first report of a Histoplasma-associated inflammatory pseudotumour mimicking cancer occurring in the kidney