A prediction of neutrino mixing matrix with CP violating phase

The latest experimental progress have established three kinds of neutrino oscillations with three mixing angles measured to rather high precision. There is still one parameter, i.e., the CP violating phase, missing in the neutrino mixing matrix. It is shown that a replay between different parametrizations of the mixing matrix can determine the full neutrino mixing matrix together with the CP violating phase. From the maximal CP violation observed in the original Kobayashi-Maskawa (KM) scheme of quark mixing matrix, we make an Ansatz of maximal CP violation in the neutrino mixing matrix. This leads to the prediction of all nine elements of the neutrino mixing matrix and also a remarkable prediction of the CP violating phase $\delta_{\rm CK}=(85.48^{+4.67(+12.87)}_{-1.80(-4.90)})^\circ$ within $1\sigma (3\sigma)$ range from available experimental information. We also predict the three angles of the unitarity triangle corresponding to the quark sector for confronting with the CP-violation related measurements.Comment: 9 pages. Version accepted for publication in PLB, with methods for CP-violating phase measurements discusse

The Majorana neutrino mass matrix indicated by the current data

The Majorana neutrino mass matrix combines information from the neutrino masses and the leptonic mixing in the flavor basis. Its invariance under some transformation matrices indicates the existence of certain residual symmetry. We offer an intuitive display of the structure of the Majorana neutrino mass matrix, using the whole set of the oscillation data. The structure is revealed depending on the lightest neutrino mass. We find that there are three regions with distinct characteristics of structure. A group effect and the $\mu$-$\tau$ exchange symmetry are observed. Six types of texture non-zeros are shown. Implications for flavor models are discussed.Comment: 18 Latex pages, 8 figure

Quark-lepton complementarity and self-complementarity in different schemes

With the progress of increasingly precise measurements on the neutrino mixing angles, phenomenological relations such as quark-lepton complementarity (QLC) among mixing angles of quarks and leptons and self-complementarity (SC) among lepton mixing angles have been observed. Using the latest global fit results of the quark and lepton mixing angles in the standard Chau-Keung scheme, we calculate the mixing angles and CP-violating phases in the other eight different schemes. We check the dependence of these mixing angles on the CP-violating phases in different phase schemes. The dependence of QLC and SC relations on the CP phase in the other eight schemes is recognized and then analyzed, suggesting that measurements on CP-violating phases of the lepton sector are crucial to the explicit forms of QLC and SC in different schemes.Comment: 11 pages, 3 figures, version accepted for publication in PR

Digital RoF Aided Cooperative Distributed Antennas with FFR in Multicell Multiuser Networks

The achievable throughput of the entire cellular area is investigated, when employing fractional frequency reuse techniques in conjunction with realistically modelled imperfect optical fibre aided distributed antenna systems (DAS). Given a fixed total transmit power, a substantial improvement of the cell-edge area’s throughput can be achieved without reducing the cell-centre’s throughput. The cell-edge’s throughput supported in the worst-case direction is significantly enhanced by the cooperative linear transmit processing technique advocated. Explicitly, a cell-edge throughput of η = 5 bits/s/Hz may be maintained for a imperfect optical fibre model, regardless of the specific geographic distribution of the users

Two Rules on the Protein-Ligand Interaction

So far, we still lack a clear molecular mechanism to explain the protein-ligand interaction on the basis of electronic structure of a protein. By combining the calculation of the full electronic structure of a protein along with its hydrophobic pocket and the perturbation theory, we found out two rules on the protein-ligand interaction. One rule is the interaction only occurs between the lowest unoccupied molecular orbitals (LUMOs) of a protein and the highest occupied molecular orbital (HOMO) of its ligand, not between the HOMOs of a protein and the LUMO of its ligand. The other rule is only those residues or atoms located both on the LUMOs of a protein and in a surface pocket of a protein are activity residues or activity atoms of the protein and the corresponding pocket is the ligand binding site. These two rules are derived from the characteristics of energy levels of a protein and might be an important criterion of drug design

TEM and STEM/EELS Studies of Diamond-Like Carbon (DLC) Films and Diamond Films

This thesis is concerned with microstructural and chemical investigations of thin layers of diamond and diamond-like carbon (DLC) which were performed by transmission electron microscopy (TEM) in combination with electron energy loss spectroscopy. Practical aspects about the EELS technique of determining the fractions of sp2-hybridized carbon-atoms in DLC films are studied. The wear mechanism of diamond is proved by TEM to involve an atom-by-atom amorphization process driven by mechanical force

Impact Of Covid-19 On Women Living With Hiv Who Are Survivors Of Intimate Partner Violence

Background: As the COVID-19 pandemic continues to evolve, there is a concern about elevated intimate partner violence (IPV) risk. Women living with HIV (WLWH) faced disproportionately high rates of IPV compared to women without HIV. The intersections of the co-occurring pandemics of COVID-19 and IPV present unique challenges to WLWH in different ways. Currently, we have limited evidence on the impact of COVID-19 on the experience of IPV among WLWH. Methods: This is a cross-sectional analysis of COVID-19 impact using baseline data from an ongoing, prospective, micro-longitudinal cohort study on HIV care engagement among WLWH who have experienced lifetime IPV. We evaluated COVID-19 impact along key domains (health, day-to-day life, sexual behavior, substance use, HIV care, mental health, financial status, and having conflict with partners). We compared sociodemographic characteristics, psychiatric disorders, substance use characteristics, and COVID-19 impact domains by IPV exposure recency, using independent t-tests or Fisher’s exact tests, and Pearson\u27s chi-squared tests. We then built multiple linear regression models to investigate the association between IPV exposure and each of the different COVID-19 impact domains.  Results: Enrolled participants (n=84) comprised a group of relatively older women (mean 53.6y; SD=9.9), who were living with HIV for many years (mean 23.3y, SD=10), and all of whom had experienced lifetime IPV. Among 49 women who were currently partnered, 79.6% (n=39) reported ongoing IPV. There were no statistically significant differences between those experiencing ongoing IPV and those who were not (or not partnered) in terms of demographic characteristics, substance use, mental health, or COVID-19 impact. In multivariate models, ongoing IPV exposure was not associated with any COVID-19 impact domain. Anxiety and depression, however, were associated with a range of COVID-19 impacts, including on health, mental health, HIV care, and having conflict with partners. Hispanic ethnicity was also associated with differences in COVID-19 impact on health. More severe cocaine and opioid use were also associated with significant COVID-19 impact on day-to-day life.   Conclusions: The public health emergency period affected WLWH in varied ways, but impacts were most profound for women experiencing concurrent psychiatric and substance use disorders. Findings have important implications for future interventions to improve women’s health and social outcomes