Johann Georg Zimmermann’s Therapeutics of Solitude in the German Enlightenment

This essay charts the German eighteenth-century physician and writer Johann Georg Zimmermann’s monumental work on solitude. The essay draws on but also challenges recent historiography on two counts. First, it situates Zimmermann’s discourse on solitude in the context of the early modern cultura animi tradition, in which philosophy provided a cure for a soul perceived as diseased and perturbed by passion and desire. Placed in this context, solitude comes into view not primarily as a passive state of rest and tranquillity connected to the rural life, but as active, therapeutic and exercise-oriented work on the self. Second, it argues that Zimmermann also shaped his discourse in relation to the increasingly radical late eighteenth-century exploration of subjectivity and selfhood, an exploration that reflects the emergence of the modern conception of the unique individual and autonomous self.

Use of impurities to increase yield of seeds for food purposes

The growth-stimulating activity of the drug "Humir", created on the basis of humates, polyethylene oxides, wastes of yeast production, hydrated fullerenes and other BAS is investigated. The introduction of these components in the technology of crop production requires careful study of the properties of drugs based on them in specific soil and climatic conditions of different zones and on different types of seeds. The use of growth regulators is one of the main elements of modern technology. Changing the hormonal status of plants under the influence of exogenous growth regulators increases the activity of metabolic processes in the plant, resistance to biotic and abiotic stresses, increases yields and product quality. Growth regulators are very effective not only for field crops but also for other crops. The use of growth regulators is determined by the stage of ontogenesis, environmental conditions and tasks that are solved by phytoregulators (root formation, removal of seeds from dormancy, regulation of vegetative generative organs, regulation of fruit formation and maturation, regulation of plant stability, product quality, etc.). A number of regulators have a complex effect on the plant, stimulating seed germination, disease resistance, increasing yields and quality. The regulatory effect on the plant organism is closely related to the trophic factor (mineral and carbon nutrition), water regime, metabolism of phenolic compounds, natural conditions. It is possible to regulate the transition of a plant or organ to a state of rest, which is important before laying the fruit and seeds for storage. This served as the basis for our research to create a complex drug with growth-promoting effect. The object of research was selected mustard seeds "Talisman".

Impact of COVID-19 Lockdown on Sleep Quality in Students

A periodic state of rest accompanied by varying degrees of unconsciousness and relative inactivity is referred as sleep; in another way is a state in which an individual lacks conscious awareness of environment surroundings. Quality sleep and getting enough of it at the right times is as essential for survival just as food and water. Without sleep our brain can’t learn and create new memories, making it harder to concentrate and respond quickly. The Novel Coronavirus (also known as COVID-19) ushered the world into uncharted waters. In India, strict lockdown was imposed in three phases from March to June 2020 for the containment of the COVID-19 pandemic. At this juncture, we attempted to assess how derailment of social life due to imposed social isolation, leading to compromised sleep in the present scenario affects circadian driven sleep-wake pattern and other lifestyle related behaviour. A brief survey on affected sleep pattern of people during corona pandemic was conducted to understand the possible alterations in sleep-wake schedules and the daily routine related activities such as exposure time to digital media (i.e., TV, laptop/computer/mobile, etc.) as a consequence of lockdown.

Substantiation of a rational method for drying granules in a fluidized bed and the hydrodynamic regime of their interaction with a fluidizing agent

Gluten is produced from wheat grains and is used in the food industry as an improver in flour baking properties. On the basis of a comparative analysis of the methods of dehydration of frozen granules of wheat gluten with a surface dry crust, a rational method of drying them in a fluidized bed has been selected. In the process of calculating units with a fluidized bed, its hydrodynamic parameters have been determined: loss of the pressure of the fluidizing agent; the speed at the transition of the bed from the state of rest to the pseudo-boiling mode; layer porosity; the rate of entrainment of particles in unrestricted conditions roughly corresponding to the rate of soaring, at which a single particle is in equilibrium in the gas flow. During the dewatering operation, the rate of entrainment of the granules varies; therefore, it is advisable to use the passing fluidization mode depending on the decrease in their moisture content. In the variant of the active hydrodynamic regime in the drying unit, the dehydration procedure is intensified without a noticeable decrease in the economic efficiency of its functioning and high quality indicators of the finished product with the given final moisture are provided, which is due to the specific conditions of contact of the granules with the coolant. For granules with a moisture content of 0.19 kg/kg, the values of hydrodynamic characteristics have been determined: the area of critical pseudo-boiling rates is 4.1-5.5 m/s; the carryover rate of the fines is 12.5-14.5 m/s. As a result of the study, the choice has been substantiated in favor of drying the studied granules in a fluidized bed due to the prevalence of its advantages over the dehydration of the object in drum dryers.

Optimization of rotate mode at constant change of departure in the level-luffing crane with geared sector

The results of optimization of the rotation mode of the level-luffing boom system of the crane at the launch site, with the steady-state mode of departure change. The object of the study is a boom system with a sector drive of the mechanism of change of departure. The mechanism of rotation consists of an electric motor, a planetary mechanism and an open gear. Variation calculus methods were used to optimize the mode of rotation of the boom system. In this case, a variational problem is formed, which includes the equation of motion of the boom system when turning and changing the departure, the optimization criterion and boundary conditions of motion. The optimization criterion has the form of an integral functional that reflects the root mean square value of the driving torque of the drive mechanism of rotation during start-up. The study was carried out at the starting point of the electric motor of the turning mechanism from the state of rest to reach the nominal speed and at a steady speed of rotation of the electric motor of the mechanism of change of departure. The solution of the problem is presented in the form of a polynomial with two terms, the first of which provides boundary conditions of motion, and the second minimizes the criterion of optimization through unknown coefficients. To do this, use a software package. Graphs of change of kinematic characteristics of cargo and boom system at work of mechanisms of turn and change of departure, and also the driving moment in the course of start of the mechanism of turn which correspond to an optimum mode of movement are constructed. The resulting mode of movement allowed to eliminate the oscillations of the load on the suspension. Based on research, recommendations for the use of the obtained optimal start-up mode have been developed.

Westward-propagating Rossby modes in idealized GCMs

This work investigates the characteristics of westward-propagating Rossby modes in idealized global general circulation models. Using a nonlinear smoothing algorithm to estimate the background spectrum and an objective method to extract the spectral peaks, the 4 leading meridional modes can be identified for each of the first 3 zonal wavenumbers, with frequencies close to the predictions from the Hough modes obtained by linearizing about a state of rest. Variations in peak amplitude for different modes, both within a simulation and across simulations, may be understood under the assumption that the forcing of the modes scales with the background spectrum. Surface friction affects the amplitude and width of the peaks but both remain finite as friction goes to zero, which implies that some other mechanism, arguably nonlinear, must also contribute to the damping of the modes. Although spectral peaks are also observed for the precipitation field with idealized moist physics, there is no evidence of mode enhancement by the convective heating. Subject to the same friction, the amplitude of the peaks are very similar in the dry and moist models when both are normalized by the background spectra.

Wind-Driven Oscillations in Meridional Overturning Circulations near the Equator. Part II: Idealized Simulations

Large-amplitude [±100 Sv (1 Sv ≡ 106 m3 s−1)], high-frequency oscillations in the Pacific Ocean’s meridional overturning circulation within 10° of the equator have been found in integrations of the NEMO ocean general circulation model. Part I of this paper showed that these oscillations are dominated by two bands of frequencies with periods close to 4 and 10 days and that they are driven by the winds within about 10° of the equator. This part shows that the oscillations can be well simulated by small-amplitude, wind-driven motions on a horizontally uniform, stably stratified state of rest. Its main novelty is that, by focusing on the zonally integrated linearized equations, it presents solutions for the motions in a basin with sloping side boundaries. The solutions are found using vertical normal modes and equatorial meridional modes representing Yanai and inertia–gravity waves. Simulations of 16-day-long segments of the time series for the Pacific of each of the first three meridional and vertical modes (nine modes in all) capture between 85% and 95% of the variance of matching time series segments diagnosed from the NEMO integrations. The best agreement is obtained by driving the solutions with the full wind forcing and the full pressure forces on the bathymetry. Similar results are obtained for the corresponding modes in the Atlantic and Indian Oceans. Slower variations in the same meridional and vertical modes of the MOC are also shown to be well simulated by a quasi-stationary solution driven by zonal wind and pressure forces.

THE CONCEPT OF INERTIA: AN INTERDISCIPLINARY APPROACH

“Every body perseveres in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed thereon” (p. Newton 1846, p. 83). This is the famous first axiom or law of motion stated by Newton in his masterpiece The Mathematical principles of natural philosophy (ivi). Everywhere, in the courses of physics at the high school level the inertia principle is the first to be taught. However, there are many doubts that most of learners fully grasp its numerous and fundamental nuances, which are necessary for a satisfying introduction to physics. Therefore, I propose an interdisciplinary approach for the explanation of this principle in which history of science and analysis of the daily experiences are joined to offer a complete comprehension of the concept of inertia.

PRINCIPLE AND THEOREMS OF REVERSIONAL CALCULATION

A reverse optimality principle (ROP) is formulated and an algorithm for its use for constructing optimal portable object movements is presented. Using an example, sufficient conditions for the extremality of the restored criterion functional are verified when constructing an optimal control of the «acceleration–deceleration» type. The following theorems were formulated and proved: on the numerical equality of integrals with different integral functions, on the minimum energy to achieve the goal of optimally controlled motion in the form of «acceleration–deceleration». Basing on the generalization of the results for optimal controls designing of the «acceleration–deceleration» type of motion, whence the known special cases follow, universal analytical control function (translational acceleration) was found. Analytically and numerically was confirmed the existence of the limiting minimum control energy at which the movement of an object from the initial state of rest to a new state of rest is possible at a fixed distance and time of motion.

Kelvin/Rossby Wave Partition of Madden-Julian Oscillation Circulations

The Madden Julian Oscillation (MJO) is a large-scale convective and circulation system that propagates slowly eastward over the equatorial Indian and Western Pacific Oceans. Multiple, conflicting theories describe its growth and propagation, most involving equatorial Kelvin and/or Rossby waves. This study partitions MJO circulations into Kelvin and Rossby wave components for three sets of data: (1) a modeled linear response to an MJO-like heating; (2) a composite MJO based on atmospheric sounding data; and (3) a composite MJO based on data from a Lagrangian atmospheric model. The first dataset has a simple dynamical interpretation, the second provides a realistic view of MJO circulations, and the third occurs in a laboratory supporting controlled experiments. In all three of the datasets, the propagation of Kelvin waves is similar, suggesting that the dynamics of Kelvin wave circulations in the MJO can be captured by a system of equations linearized about a basic state of rest. In contrast, the Rossby wave component of the observed MJO’s circulation differs substantially from that in our linear model, with Rossby gyres moving eastward along with the heating and migrating poleward relative to their linear counterparts. These results support the use of a system of equations linearized about a basic state of rest for the Kelvin wave component of MJO circulation, but they question its use for the Rossby wave component.