Solvent permits solid curing agents to be used at room temperatures

Solvent system dissolves the solid curing agents used with polyurethane resins in adhesive systems. The system developed yields bond strengths comparable to 100 percent solid formulations. The optimum solvent chosen was a 55.5 percent solution in anhydrous tetrahydrofuran

Spirituality Within Reach: A Pathway through Meditation

Meditation is an ancient spiritual practice that has been demonstrated to be beneficial in reducing chronic pain, substance use, and eating disorders, as well as aiding in the treatment of sleep disorders, cancer, and psychological distress. In an effort to enhance the benefits, many contemporary meditation practices have been secularized, focusing on the cognitive, the psychological, and the emotional components, while de-emphasizing the spiritual aspects of meditation. However, spiritual meditation practices also demonstrate benefits, including stress reduction, improved emotional well being, increases in pain tolerance, reductions in mental health symptoms, and increased faith. However, little is known regarding the effects of different types of meditation on the reported achievement of a sense of spiritual height. Further, it is unclear whether age, gender, or months of meditation practice might be related to achieving spiritual height. The present study was specifically designed to determine whether meditation results in achieving spiritual height, and whether the rates of reportedly achieving spiritual height many times or almost always might significantly differ by various meditation types, including Transcendental Meditation (TM), Relaxation Response (RR), Mindfulness Meditation (MM), Mindfulness Based Stress Reduction (MBSR), Christian Devotion Meditation (CDM) and Other types of meditation that do not fit into these categories by analyzing an international database of meditators. Survey data (N = 965) were tested using t-tests, chi square, and logistic regression statistics at the p \u3c .05 threshold for statistical significance. Overall, 53% of the total sample reported achieving spiritual height many times or almost always during meditation, with 62% of MM practitioners reporting experiencing spiritual height many times or almost always. Additionally, one third or more of secular meditation (MBSR and RR) practitioners reported achieving spiritual height many times or almost always. Combined, these findings indicate that the clinical community needs to be aware that meditation is a viable strategy to achieve spiritual height in clients, even if the meditation is secular in nature, and that MM may provide the best odds of experiencing spiritual height during meditation. This Dissertation is available in Open Access at AURA: Antioch University Repository and Archive, http://aura.antioch.edu and OhioLink ETD Center, http://www.ohiolink.edu/etd

Influence of modulation frequency in rubidium cell frequency standards

The error signal which is used to control the frequency of the quartz crystal oscillator of a passive rubidium cell frequency standard is considered. The value of the slope of this signal, for an interrogation frequency close to the atomic transition frequency is calculated and measured for various phase (or frequency) modulation waveforms, and for several values of the modulation frequency. A theoretical analysis is made using a model which applies to a system in which the optical pumping rate, the relaxation rates and the RF field are homogeneous. Results are given for sine-wave phase modulation, square-wave frequency modulation and square-wave phase modulation. The influence of the modulation frequency on the slope of the error signal is specified. It is shown that the modulation frequency can be chosen as large as twice the non-saturated full-width at half-maximum without a drastic loss of the sensitivity to an offset of the interrogation frequency from center line, provided that the power saturation factor and the amplitude of modulation are properly adjusted

Spirituality Within Reach: A Pathway through Meditation

Meditation is an ancient spiritual practice that has been demonstrated to be beneficial in reducing chronic pain, substance use, and eating disorders, as well as aiding in the treatment of sleep disorders, cancer, and psychological distress. In an effort to enhance the benefits, many contemporary meditation practices have been secularized, focusing on the cognitive, the psychological, and the emotional components, while de-emphasizing the spiritual aspects of meditation. However, spiritual meditation practices also demonstrate benefits, including stress reduction, improved emotional well being, increases in pain tolerance, reductions in mental health symptoms, and increased faith. However, little is known regarding the effects of different types of meditation on the reported achievement of a sense of spiritual height. Further, it is unclear whether age, gender, or months of meditation practice might be related to achieving spiritual height. The present study was specifically designed to determine whether meditation results in achieving spiritual height, and whether the rates of reportedly achieving spiritual height many times or almost always might significantly differ by various meditation types, including Transcendental Meditation (TM), Relaxation Response (RR), Mindfulness Meditation (MM), Mindfulness Based Stress Reduction (MBSR), Christian Devotion Meditation (CDM) and Other types of meditation that do not fit into these categories by analyzing an international database of meditators. Survey data (N = 965) were tested using t-tests, chi square, and logistic regression statistics at the p \u3c .05 threshold for statistical significance. Overall, 53% of the total sample reported achieving spiritual height many times or almost always during meditation, with 62% of MM practitioners reporting experiencing spiritual height many times or almost always. Additionally, one third or more of secular meditation (MBSR and RR) practitioners reported achieving spiritual height many times or almost always. Combined, these findings indicate that the clinical community needs to be aware that meditation is a viable strategy to achieve spiritual height in clients, even if the meditation is secular in nature, and that MM may provide the best odds of experiencing spiritual height during meditation. This Dissertation is available in Open Access at AURA: Antioch University Repository and Archive, http://aura.antioch.edu and OhioLink ETD Center, http://www.ohiolink.edu/etd

Alien Registration- Cyr, Yvonne C. (Madawaska, Aroostook County)

https://digitalmaine.com/alien_docs/35370/thumbnail.jp

Nivat's conjecture holds for sums of two periodic configurations

Nivat's conjecture is a long-standing open combinatorial problem. It concerns two-dimensional configurations, that is, maps $\mathbb Z^2 \rightarrow \mathcal A$ where $\mathcal A$ is a finite set of symbols. Such configurations are often understood as colorings of a two-dimensional square grid. Let $P_c(m,n)$ denote the number of distinct $m \times n$ block patterns occurring in a configuration $c$. Configurations satisfying $P_c(m,n) \leq mn$ for some $m,n \in \mathbb N$ are said to have low rectangular complexity. Nivat conjectured that such configurations are necessarily periodic. Recently, Kari and the author showed that low complexity configurations can be decomposed into a sum of periodic configurations. In this paper we show that if there are at most two components, Nivat's conjecture holds. As a corollary we obtain an alternative proof of a result of Cyr and Kra: If there exist $m,n \in \mathbb N$ such that $P_c(m,n) \leq mn/2$, then $c$ is periodic. The technique used in this paper combines the algebraic approach of Kari and the author with balanced sets of Cyr and Kra.Comment: Accepted for SOFSEM 2018. This version includes an appendix with proofs. 12 pages + references + appendi