Optical one-way quantum computing with a simulated valence-bond solid

One-way quantum computation proceeds by sequentially measuring individual spins (qubits) in an entangled many-spin resource state. It remains a challenge, however, to efficiently produce such resource states. Is it possible to reduce the task of generating these states to simply cooling a quantum many-body system to its ground state? Cluster states, the canonical resource for one-way quantum computing, do not naturally occur as ground states of physical systems. This led to a significant effort to identify alternative resource states that appear as ground states in spin lattices. An appealing candidate is a valence-bond-solid state described by Affleck, Kennedy, Lieb, and Tasaki (AKLT). It is the unique, gapped ground state for a two-body Hamiltonian on a spin-1 chain, and can be used as a resource for one-way quantum computing. Here, we experimentally generate a photonic AKLT state and use it to implement single-qubit quantum logic gates.Comment: 11 pages, 4 figures, 8 tables - added one referenc

PENGGUNAAN POTENTIALLY INAPPROPRIATE MEDICATIONS (PIMs) PADA PASIEN GERIATRI RAWAT INAP OSTEOARTHRITIS DI RS PKU MUHAMMADIYAH YOGYAKARTA

Potentially inappropriate medications (PIMs) use among elderly is a serious public health problem because it is intrinsically linked to increased morbidity, mortality, and healthcare costs. This study  aims to determine the association between number of drug prescribed, duration of hospital stay and PIMs use among elderly hospitalized patients at PKU Muhammadiyah Yogyakarta General Hospital. This study was analytic observational with cross-sectional study. Beers criteria 2012 were used to identify PIMs use among elderly hospitalized patients with osteoarthritis. Logistic regression analysis were used to determine association between number drugs of prescribed, duration of hospital stay and PIMs use. The results showed that 7 (38.9%) out of 18 hospitalized elderly patients were identified PIMs use and all of patients received atleast one PIM. The most common agents involved in PIMs were estazolam (11.1%), and metoclopramide (11.1%). Polypharmacy is a major predictor factor of PIMs use in this study

Similarity Check: Penggunaan potentially inapropriate medications (Pims) pada pasien geriatri rawat inap osteoarthritis di RS PKU Muhammadiyah Yogyakarta

Penggunaan obat yang tidak tepat (PIMs) pada geriatri merupakan masalah kesehatan masyarakat yang serius karena secara intrinsik terkait dengan peningkatan morbiditas, mortalitas, dan biaya kesehatan. Tujuan penelitian ini adalah untuk mengetahui hubungan antara jumlah obat yang diresepkan, dan durasi rawat inap dengan penggunaan PIMs pada pasien geriatri rawat inap osteoarthritis (OA) di RS PKU Muhammadiyah Yogyakarta. Penelitian ini merupakan penelitian analitik observasional dengan studi cross- sectional. Beers Criteria 2012 digunakan untuk mengidentifikasi penggunaan PIMs pada pasien geriatri rawat inap osteoarthritis. Analisis regresi logistik digunakan untuk mengetahui hubungan jumlah obat yang diresepkan dan durasi rawat inap dengan penggunaan PIMs. Hasil penelitian menunjukkan bahwa 7 (38,9%) dari total 18 pasien geriatri rawat inap OA teridentifikasi menggunakan PIMs dan dan semua pasien hanya menerima satu PIM. PIMs yang paling umum digunakan adalah estazolam (11,1%) dan metoklopramid (11,1%). Pada penelitian ini, polifarmasi adalah faktor prediktor utama penggunaan PIMs (p=0,049). Kata kunci: Potentially Inappropriate Medications, Beers Criteria 2012, Geriatri, O

DAMPAK PEMBANGUNAN JEMBATAN KAPUAS I (PARALEL) TERHADAP KINERJA SIMPANG BERSINYAL KOTA PONTIANAK

Persimpangan ruas jalan menempati posisi utama dalam hambatan diperjalanan. Kemacetan, antrian kendaraan dan tundaan sangat sering terjadi a di simpang bersinyal Jalan Sultan Hamid – Jalan Tanjung Raya I – Jalan Perintis Kemerdekaan – Jalan Tanjung Raya II, lengan simpang Jalan Sultan Hamid memiliki geometrik sejajar dengan Jembatan Kapuas 1. Simpang ini juga merupakan akses penghubung lalu lintas darat dari kota maupun keluar kota Pontianak, sehingga memiliki resiko tinggi bila kemacetan terjadi terlalu lama. Perencanaan Jembatan Paralel Kapuas  1 dilakukan untuk mengatasi kemacetan, namun mengakibatkan perubahan kinerja pada simpang saat sekarang. Tujuan penelitian menganalisa kinerja dan merencanakan sinyal lalu lintas pada simpang. Metodologi yang digunakan dengan observasi, dokumentasi dan survey lapangan. Pengolahan data menggunakan teori perhitungan Manual Kapasitas Jalan Indonesia (MKJI) 1997. Tiga analisa sinyal yang dilakukan yaitu, 1) Empat fase dengan tidak mengizinkan belok kiri langsung, 2).  Empat dengan mengizinkan belok kiri langsung, 3) Empat fase dengan lajur khusus untuk belok kanan dan mengizinkan belok kiri langsung. Hasil analisa simpang saat ini memiliki tingkat pelayanan tipe F, hasil kinerja simpang adanya Jembatan Paralel Kapuas 1 memiliki tingkat pelayanan tipe D. Jembatan Paralel Kapuas 1 dan perencanaan sinyal dengan tetap mengizinkan belok kiri langsung (LTOR) tanpa menunggu waktu hijau adalah solusi terbaik.Kata Kunci: Jembatan Paralel Kapuas 1, Kinerja, MKJI,  Persimpangan, Traffic Lingh

Hydrothermal alteration of andesitic lava domes can lead to explosive volcanic behaviour

Dome-forming volcanoes are among the most hazardous volcanoes on Earth. Magmatic outgassing can be hindered if the permeability of a lava dome is reduced, promoting pore pressure augmentation and explosive behaviour. Laboratory data show that acid-sulphate alteration, common to volcanoes worldwide, can reduce the permeability on the sample lengthscale by up to four orders of magnitude and is the result of pore- and microfracture-filling mineral precipitation. Calculations using these data demonstrate that intense alteration can reduce the equivalent permeability of a dome by two orders of magnitude, which we show using numerical modelling to be sufficient to increase pore pressure. The fragmentation criterion shows that the predicted pore pressure increase is capable of fragmenting the majority of dome-forming materials, thus promoting explosive volcanism. It is crucial that hydrothermal alteration, which develops over months to years, is monitored at dome-forming volcanoes and is incorporated into real-time hazard assessments

Phase diagram of the two-dimensional Hubbard-Holstein model

The electron\u2013electron and electron\u2013phonon interactions play an important role in correlated materials, being key features for spin, charge and pair correlations. Thus, here we investigate their effects in strongly correlated systems by performing unbiased quantum Monte Carlo simulations in the square lattice Hubbard-Holstein model at half-filling. We study the competition and interplay between antiferromagnetism (AFM) and charge-density wave (CDW), establishing its very rich phase diagram. In the region between AFM and CDW phases, we have found an enhancement of superconducting pairing correlations, favouring (nonlocal) s-wave pairs. Our study sheds light over past inconsistencies in the literature, in particular the emergence of CDW in the pure Holstein model case

Ethanol Production from Molasses with Immobilized Cells Technique in Packed Bed Bioreactor by Extractive

The aim of this research was to study the effect of total sugar concentration, Ca-Alginate and K Carrageenan density in immobilized cells on packed-bed and batch bioreactor performance for ethanol production. In addition, this research was also aimed to study the effect of solvent flow rate on packed column performance expressed as % extraction recovery. This experiment was carried out with total sugar concentration of 10, 14, 18 % (v/v) and immobilized cells Ca-Alginate and K-Carrageenan at a density of 2% (w/v) with amyl alcohol as solvent. Based on the result of this study, it is concluded that the total sugar concentration influenced the concentration, yield and productivity of ethanol. The result of this study for immobilized Ca-Alginate cells showed that the maximum ethanol product concentration, yield and productivity were 7.28% g/l, 57.48 g/l, 38.22%, 71.85 g/l.hr, respectively. Meanwhile, immobilized K-Carrageenan cells showed the maximum ethanol product concentration, yield and productivity as 7.22% /56.99 g/l, 26.73%, and 68.40 g/l.hr, respectively. In extraction process, increasing amyl alcohol solvent flow rate will increase mass transfer and hence increase ethanol recovery