Simulation of charged particle trajectories in the neutron decay correlation experiment abBA

The proposed neutron decay correlation experiment, abBA, will directly detect the direction of emission of decay protons and electrons as well as providing spectroscopic information for both particles. In order to provide this information, the abBA experiment incorporates spatially varying electric and magnetic fields. We report on detailed simulations of the decay particle trajectories in order to assess the impact of various systematic effects on the experimental observables. These include among others; adiabaticity of particle orbits, tracking of orbits, reversal of low energy protons due to inhomogeneous electric field, and accuracy of proton time of flight measurements. Several simulation methods were used including commercial software (Simion), custom software, as well as analytical tools based on the use of adiabatic invariants. Our results indicate that the proposed field geometry of the abBA spectrometer will be substantially immune to most systematic effects and that transport calculations using adiabatic invariants agree well with solution of the full equations of motion

Love thy neighbour

Queen Victoria's granddaughter, Abba and a border-crossing lorry all play their parts in a series of exhibitions marking a centenary of Norwegian independence

Menorah Review (No. 20, Fall, 1990)

Abba Hillel Silver, The Holocaust and American Politics: 1943-1944 -- Different Jews - One Judaism -- Book Briefing -- Rescuing Jews During the Holocaust -- Balancing -- Text and Context: The Case of American Judaism -- Book Briefing

Characterization of botryococcus sp. and identification of carbohydrates metabolic related enzymes toward lipid production

The advancement of microalgal biofuels is faced with challenges among which is low strain performance in lipid production. Alternatively, the carbohydrate production in microalgal cells could be manipulated to increase the lipid content thereby maximizing the overall biofuel production. This work is aimed at determining metabolic pathway and enzymes involved in carbohydrate metabolism of Botryococcus sp. The B. sp. from Taman Negara Johor Endau Rompin was isolated and identified. Some relevant intracellular metabolites were extracted and quantified through HPLC and GC-MS analysis while extracellular metabolites excreted into the Bold basal medium were also analysed and identified through GC-MS. Enzymes involved in carbohydrate metabolism leading to lipid production in B. sp. under natural conditions were also identified through one-dimensional gel electrophoresis followed by proteomic mass spectrometry (LC-MS) and database searching. Finally, the carbohydrate to lipid metabolic pathway of B. sp. cultivated under natural conditions was determined. The total carbohydrate content was found to be 23 % per milligram biomass dry weight with monomeric sugars galactose, glucose, mannose, and arabinose. Total protein estimated for the microalgae B. sp. is 16.22 % and the lipid content was found to be 60.69 %. The extracellular metabolites constitute majorly cyclohydrocarbons, nitrogenated hydrocarbons, siloxanes, phenols and phenol derivatives. A glycolytic enzyme ‘Enolase ’which can generate phosphoenolpyruvate (PEP) and then convert it into pyruvate was identified in this study. Enolase which helps in high lipid metabolism was found in the cytoplasm and was used to construct the alternative pathway. Enolase was found to export fixed carbon (3PGA) to the cytoplasm, hence providing a shorter route to lipid production than the normal process via the plastid leading to the production of more lipid in Botryococcus

Four Period Crossover Designs

In higher-order four period crossover designs with two treatments, sixteen possible treatment sequences can result: AAAA, AAAB, AABA, AABB, ABAA, ABAB, ABBA, ABBB and their duals. Higher-order crossover designs are useful for several reasons: they allow estimation of a treatment effect even in the presence of a carry-over effect, they provide estimates of intra-subject variability and they draw inference on the carry-over effect. The real question related to a two-treatment four-period crossover design is the real world application of these designs. This article considers four designs: Design I: ABBA and its dual; Design II: ABBA, AABB and their duals, Design III: ABBA, ABAA and their duals, Design IV: ABBA, ABAB and their duals. A traditional model that specifies a first-order carryover effect is assumed and methods for estimating treatment and first-order carryover effects in the set of four period trials are outlined

ABBA regulates plasma-membrane and actin dynamics to promote radial glia extension

Radial glia play key roles in neuronal migration, axon guidance, and neurogenesis during development of the central nervous system. However, the molecular mechanisms regulating growth and morphology of these extended cells are unknown. We show that ABBA, a novel member of the IRSp53-MIM protein family, is enriched in different types of radial glia. ABBA binds ATP-actin monomers with high affinity and deforms PtdIns(4,5)P2-rich membranes in vitro through its WH2 and IM domains, respectively. In radial-glia-like C6-R cells, ABBA localises to the interface between the actin cytoskeleton and plasma membrane, and its depletion by RNAi led to defects in lamellipodial dynamics and process extension. Together, this study identifies ABBA as a novel regulator of actin and plasma membrane dynamics in radial glial cells, and provides evidence that membrane binding and deformation activity is critical for the cellular functions of IRSp53-MIM-ABBA family proteins

A New Testament Theology of God as Father (Abba) as the Hermeneutical Key to the Teaching of Christ on Prayer in the Gospels

When Jesus of Nazareth lifted His eyes to Heaven in Matthew 6:9 and taught His disciples to address Yahweh, the covenant God of Judaism as Father (πατήρ, אַבָּא), this was an offense of blasphemy and presumption culpable of death for His Jewish audience; unless it was true (John 5:18). Not only was Father the distinctive and unique term given to God by Jesus, but there is almost universal scholarly consensus that behind the Greek πατήρ is the Aramaic Abba (Αββα, אַבָּא) (Mark 14:36). In both the ANE and Jewish contexts of the Old Testament and first-century Israel, it was unparalleled and unprecedented to address Yahweh directly as Father. To do so with the intimate familial term Abba evokes an intimacy and access no one had ever employed before Jesus. The thesis of this dissertation is that the hermeneutical key to the teaching of Christ concerning prayer is His relationship with and revelation of God as Abba Father. That is, Christian prayer is categorically distinct from Old Testament or Jewish Prayer because disciples of Christ are invited to approach God in an unprecedented manner as their Abba Father just as the Lord Jesus did, transforming the entirety of the Christian religion. Jesus of Nazareth’s use of Abba as a direct address for God in prayer was unprecedented and unparalleled against the religious background of His time. New Testament prayer is categorically distinct when compared with its Old Testament and Jewish counterparts and the explanation is Jesus\u27 use of Abba for God and His instruction for His disciples to do the same. Finally, Jesus’ teaching concerning God as Abba is an invitation to His disciples into the heart of Trinitarian love to enjoy the same intimacy and access with Abba that He did. This means that all Christians have unprecedented and unparalleled access to God as His sons and daughters most clearly displayed in the extraordinary privilege and gift of Christian prayer in Jesus\u27 name, empowered by the Holy Spirit, addressed to Abba Father