R-parity Conservation via the Stueckelberg Mechanism: LHC and Dark Matter Signals

We investigate the connection between the conservation of R-parity in supersymmetry and the Stueckelberg mechanism for the mass generation of the B-L vector gauge boson. It is shown that with universal boundary conditions for soft terms of sfermions in each family at the high scale and with the Stueckelberg mechanism for generating mass for the B-L gauge boson present in the theory, electric charge conservation guarantees the conservation of R-parity in the minimal B-L extended supersymmetric standard model. We also discuss non-minimal extensions. This includes extensions where the gauge symmetries arise with an additional U(1)_{B-L} x U(1)_X, where U(1)_X is a hidden sector gauge group. In this case the presence of the additional U(1)_X allows for a Z' gauge boson mass with B-L interactions to lie in the sub-TeV region overcoming the multi-TeV LEP constraints. The possible tests of the models at colliders and in dark matter experiments are analyzed including signals of a low mass Z' resonance and the production of spin zero bosons and their decays into two photons. In this model two types of dark matter candidates emerge which are Majorana and Dirac particles. Predictions are made for a possible simultaneous observation of new physics events in dark matter experiments and at the LHC.Comment: 38 pages, 7 fig

Co-Housing Rodents with Different Coat Colours as a Simple, Non-Invasive Means of Individual Identification:Validating Mixed-Strain Housing for C57BL/6 and DBA/2 Mice

Standard practice typically requires the marking of laboratory mice so that they can be individually identified. However, many of the common methods compromise the welfare of the individuals being marked (as well as requiring time, effort, and/or resources on the part of researchers and technicians). Mixing strains of different colour within a cage would allow them to be readily visually identifiable, negating the need for more invasive marking techniques. Here we assess the impact that mixed strain housing has on the phenotypes of female C57BL/6 (black) and DBA/2 (brown) mice, and on the variability in the data obtained from them. Mice were housed in either mixed strain or single strain pairs for 19 weeks, and their phenotypes then assessed using 23 different behavioural, morphological, haematological and physiological measures widely used in research and/or important for assessing mouse welfare. No negative effects of mixed strain housing could be found on the phenotypes of either strain, including variables relevant to welfare. Differences and similarities between the two strains were almost all as expected from previously published studies, and none were affected by whether mice were housed in mixed- or single-strain pairs. Only one significant main effect of housing type was detected: mixed strain pairs had smaller red blood cell distribution widths, a measure suggesting better health (findings that now need replicating in case they were Type 1 errors resulting from our multiplicity of tests). Furthermore, mixed strain housing did not increase the variation in data obtained from the mice: the standard errors for all variables were essentially identical between the two housing conditions. Mixed strain housing also made animals very easy to distinguish while in the home cage. Female DBA/2 and C57BL/6 mice can thus be housed in mixed strain pairs for identification purposes, with no apparent negative effects on their welfare or the data they generate. This suggests that there is much value in exploring other combinations of strains

Investigation of the influence of crosslinking activation methods on the physicochemical and Cu(II) adsorption characteristics of cellulose hydrogels

[[abstract]]Hydrogels represent an attractive soft material with promising applications in many fields. Conventional methods for hydrogel preparation typically involve heat curing either by water-bath (WB) heating or microwave (MW) irradiation to facilitate crosslinking. However, a detailed investigation of the influence of WB- and MW-mediated crosslinking process on the characteristics of hydrogels has been rarely reported. This work aims to evaluate the physicochemical properties of epichlorohydrin (ECH) crosslinked cellulose hydrogels prepared by WB and MW heating methods, including pore morphology, chemical composition, crystallinity, thermal stability, and water absorption capacity. The results showed that MW heating could accelerate the crosslinking reaction between cellulose and ECH to produce robust hydrogel, with a 3 min total irradiation time at 400 W compared to 2 h at 60 °C under conventional WB heating. The total utility cost to produce WBH is US$0.052, which is 14 times higher than MWH (US$ 0.004). The estimation of the total production cost of MWH on a large scale is US$ 2.86 per kg. Moreover, the as-prepared MWH displayed outstanding performance in Cu(II) removal at 30 °C and pH 7, with a maximum adsorption capacity of 119 mg/g, respectively. The kinetic and equilibrium behaviors of Cu(II) ions on WBH and MWH were best described by pseudo-second order and Langmuir isotherm models, respectively

Formulasi Strategi Rumah Sakit Tentara dr. Soedjono Magelang

Army Hospital dr. Soedjono Magelang is a hospital under the auspices of the army where their duty is to provide services to members of the army, civil servants and their families and also serve the general public health. In the face of competition and service needs in the health sector, the hospitals need appropriate strategies accordingly. This study aims to find out the Strengt

Perbedaan Daya Lenting Pegas Kantilever Tunggal Berdasarkan Posisi Koil dan Diameter Koil

Peranti lepasan merupakan bagian dari perawatan ortodonti. Pegas kantilever tunggal merupakan komponen aktif dari peranti lepasan yang mengerakan gigi kearah mesial-distal. Daya lenting secara klinis memberikan gaya yang konstan selama pergerakan gigi. Posisi koil terhadap basis akrilik, diameter kawat, diameter koil, dan perubahan suhu mempengaruhi besar daya lenting. Menambah koil dapat memperpanjang kawat dan meningkatkan daya lenting yang dihasilkan. Daya yang dibutuhkan untuk menggerakkan gigi berakar tunggal adalah 25-40 gram. Tujuan: Untuk mengetahui perbedaan daya lenting pegas kantilever tunggal dengan posisi koil dan diameter koil. Metode: Penelitian yang digunakan yakni pre eksperimental. Penelitian ini adalah penelitian eksperimen yang memanipulasi independent variable, pemilihan subjek penenlitian dilakukan secara non random, dan tidak memiliki control grup atau comparison group. 45 sampel dibagi menjadi 9 kelompok dengan posisi koil 9 mm, 12 mm dan 15 mm dari basis akrilik dan diameter koil 2 mm, 2,5 mm, dan 3 mm. Kantilever tunggal diaktivasi sebesar 3mm. Pengujian pengukuran daya lenting menggunakan Gauge Meter. Hasil: Uji One Way ANOVA menunjukkan terdapat perbedaan daya lenting kantilever tunggal dengan posisi koil dan diameter koil (sig<0,05). Uji Post Hoc Turkey membuktikan terdapat perbedaan bermakna antara posisi koil dan diameter koil (sig<0,05). Hasil penelitian menunjukkan bahwa semakin besar diameter koil maka semakin kecil daya lenting yang dihasilkan, sedangkan semakin jauh posisi koil maka semakin besar daya lenting yang dihasilkan. Kesimpulan: Perbedaan posisi koil dan diameter koil berpengaruh terhadap daya lenting yang dihasilkan pada pegas kantilever tunggal

Eksplorasi Bakteri Indigenous Endofit Tanaman Kubis (Brassica Oleraceae) Organik Untuk Mengendalikan Penyakit Busuk Hitam

Tanaman kubis merupakan tanaman sayuran yang banyak dikonsumsi masyarakat di Indonesia karena memiliki kandungan gizi yang tinggi. Kubis juga merupakan salah satu komoditas hortikultura penting dan penyumbang devisa tertinggi ketiga dari sayuran semusim di Indonesia. Namun poduksi kubis terus mengalami penurunan. Hal disebabkan oleh penyakit busuk hitam yang dapat menimbulkan kerusakan hingga 70%. Sejauh ini pengendalian kimia dengan pestisida sintetis yang dapat merusak lingkungan, keamanan pangan produk pertanian, dan kesehatan manusia paling banyak dilakukan untuk mengendalikan penyakit busuk hitam. Oleh karena itu pengendalian ramah lingkungan perlu dikembangkan. Salah satunya dengan menggunakan agen antagonis berupa bakteri endofit. Penelitian ini dilakukan untuk mengetahui potensi dan keragaman bakteri indigenous endofit kubis yang dapat dimanfaatkan sebagai pengendalian hayati patogen X. campestris. Penelitian dilaksanakan di Laboratorium Penyakit Tumbuhan Jurusan Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Brawijaya pada bulan Desember 2019 sampai Agustus 2020. Penelitian ini terdiri dari beberapa tahapan yaitu: pengambilan sampel tanaman kubis organik, isolasi patogen tanaman X. campestris, Uji Patogenesitas, Eksplorasi dan seleksi bakteri endofit tanaman kubis, Uji antagonisme bakteri endofit, Karakterisasi bakteri endofit. Rancangan penelitian yang digunakan yaitu Rancangan Acak Lengkap (RAL) dengan 6 perlakuan dan 4 ulangan. Perlakuan yang diuji meliputi kontrol positif streptomycin dan 5 isolat bakteri terpilih dari hasil seleksi antagonis. Selanjutnya, data hasil pengamatan dianalisis dengan sidik ragam dan uji lanjut menggunakan Duncan Multiple Range Test (DMRT) dengan taraf signifikansi 5% pada software SPSS. Hasil pengamatan menunjukkan bahwa patogen hasil isolasi sesuai dengan karakteristik bakteri patogen X. campestris. Isolasi bakteri endofit pada daun kubis diperoleh 119 isolat dengan karakteristik koloni yang berbeda. Berdasarkan hasil seleksi diperoleh 13 isolat dapat menghasilkan zona hambat. Kemudian 5 isolat terpilih dilakukan uji antagonis dengan bakteri patogen. Hasil analisis ragam menunjukkan bahwa kelima isolat bakteri antagonis berpengaruh nyata dalam menghambat X. campestris dibandingkan dengan kontrol streptomycin. Bakteri antagonis isolat E33 merupakan bakteri genus Corynebacterium sp., isolat E79 merupakan bakteri genus Erwinia sp., dan isolat E95, E102, E109 merupakan bakteri genus Pseudomonas sp. Isolat bakteri genus Pseudomonas sp. memiliki daya hambat terbaik dibandingkan dengan isolat lainny

PENGARUH PERENDAMAN CETAKAN ALGINAT DALAM LARUTAN KITOSAN OLIGOMER TERHADAP PERTUMBUHAN STREPTOCOCCUS ALFA

Alginate is a kind of impression material that used in the manufacture of prostheses. Desinfection measures against the alginate mold shortly after molding is a recommended procedure by ADA to prevent bacterial contamination of alpha Streptococcus. The purpose of study is to find out the effect of immersion alginate mold in a solution of chitosan oligomers on the growth of alpha Streptococcus This study carried out on 50 discs of alginate incubated in alpha Streptococcus suspension for 3 minutes at room temperature, then divided into 5 groups, each group consist of 10 alginate discs. Group I is a group of alginate discs incubated in sterilized aquadest solution, group II, III, IV and V are groups of alginate discs incubated in chitosan oligomer 0.02%, 0.01%, 0.005% and 0.1% for 10 minutes at room temperature, then with dilution method and the conter hand tools to do the counting of the number of alpha Streptococcus colonies. The data obtained were Analized with one way anava and post hoc test with LSD. The result showed significant differences between the control and the treatment groups with the concentration chitosan oligomers 0.02%, 0.01%, 0.05%, and 0.1% and between the treatment groups (p < 0.05%). The conclusion is the immersion of alginate mold in chitosan oligomers inhibit the growth alpha Streptococcus, the best inhibitory concentration was 0.1 % and levels of chitosan�s minimum inhibitory was less than 99.9% hence it is bacteriostatic

Quality of Life Pasien Wanita dengan Melasma di RSUD dr. Saiful Anwar Malang

Melasma merupakan kondisi hipermelanosis simetris yang ditandai dengan munculnya makula berwarna coklat muda hingga keabu-abuan dengan persebaran yang melibatkan area kulit khususnya area wajah. Kejadian melasma lebih banyak terjadi pada wanita usia reproduktif yaitu 14-59 tahun karena beberapa faktor seperti genetik, hormonal, dan paparan sinar ultraviolet matahari. Penelitian ini bertujuan untuk melihat kualitas hidup pasien wanita dengan melasma di RSUD dr. Saiful Anwar Malang dengan melihat apakah melasma akan menurunkan kualitas hidup pada pasien. Untuk melihat korelasi dari melasma dan kualitas hidup pasien akan digunakan studi observasional potong lintang atau studi cross-sectional. Teknik pengambilan sampel menggunakan consecutive sampling yang dilakukan pada bulan September – Desember 2021 pada Poliklinik Kulit dan Kelamin RSUD dr. Saiful Anwar Malang. Selanjutnya dalam pengambilan data pasien akan diberi lembar kuisioner yang berisi Melasma Quality of Life atau MelasQol dan Skor mMASI yang digunakan untuk pengukuran keparahan melasma pada pasien. Hasil analisis data menggunakan uji korelasi Pearson antara MelasQol dan nilai mMASI diperoleh nilai koefisien korelasi sebesar r=0.706 dan nilai p=0.022, sehingga dapat disimpulkan bahwa terdapat hubungan yang signifikan antara nilai keparahan pasien melasma menggunakan nilai MelasQol dan skor mMASI. Koefisien korelasi bernilai positif, artinya semakin tinggi nilai keparahan pasien melasma menggunakan skor mMASI, maka akan diikuti oleh peningkatan total skor MelasQol yang mengindikasi semakin tinggi gangguan kualitas hidup yang menunjukkan kualitas hidup yang buruk dan sebaliknya. Koefisien korelasi memiliki nilai yang sangat kuat yaitu 0,706, hal ini berarti terdapat hubungan yang sangat kuat antara skor mMASI dan kualitas hidup pasien

HUBUNGAN ANTARA KOMUNIKASI INTERPERSONAL DENGAN KEPUASAN PASIEN PEMAKAI GIGI TIRUAN LENGKAP

The process to make full denture uses semi adjustable articulator takes more than one visit therefore need cooperation between patient and dentist. This research focus on correlation between patient and dentist those develop through interpersonal communication. Interpersonal communication between patient and dentist required to bring successful treatment and patient satisfaction. The purpose of this research is to know the correlation between interpersonal communication and patient satisfaction that use full denture. This research was done toward 13 respondents that use full denture with two questionnaire, there are interpersonal communication scale and patient satisfaction scale. The questionnaire that made is an attitude scale of patient according to Likert scale. Interpersonal communication scale has content 19 statements that consist of 5 aspects there are openness, empathy, supportiveness, positiveness, and equality. Patient satisfaction scale has content 18 statements that consist of 3 aspects there are mastication, speech, and aesthetic. The data analysed with normality test, linearity test, simple linear regression test, and Product Moment correlation test. The result showed coefficient correlation R = 0.620 with p = 0.024. Equality regression line Y = 0.728X + 15.694 with F value = 6.886 and r = 0.620. The conclusion showed positive correlation between interpersonal communication and patient satisfaction that use full denture