scholarly journals A new distance indicator to the Galactic Planetary Nebulae based upon IRAS Fluxes

1997 ◽  
Vol 180 ◽  
pp. 51-52
Author(s):  
A. Tajitsu ◽  
S. Tamura

The distance to Planetary Nebulae (PNe) is a most important parameter to study their evolution and the distribution among our Galaxy, but it has been very difficult to determine it precisely. On the other hand, it is well-known that the IRAS colors of PNe are very similar to the blackbody colors. Taking into account of this characteristic, we define a new method to get some information about the distance to PNe by the blackbody fitting of IRAS 4-band fluxes, assuming these fluxes are due to the thermal emission from the nebular dust envelope.

1989 ◽  
Vol 131 ◽  
pp. 539-539
Author(s):  
R. Szczerba

Planetary nebulae (PNe) are very useful as a tool for testing the theory of stellar evolution. The most widely applied method in this respect is the Hertzsprung-Russell (H-R) diagram. However, the observed positions of planetary nebulae nuclei (PNNi) on the H-R diagram are subject to large uncertainties, mostly due to inaccurate distances to them. On the other hand, the (absolute visual magnitude, age)-diagram also is not free of this problem. Therefore, an attempt has been done to develop a new method which is distance-independent. For comparison between theory and observations we propose the I (Hell λ 4686) /I(H β) versus log [I(H β, PN)/IC (H β, PNN)] diagram. Both ratios reflect the evolutionary status of the central star and the surrounding nebula. Consequently, such diagram is a valuable tool for studying common evolution of the PNN-PN system.


During the last few years of his life Prof. Simon Newcomb was keenly interested in the problem of periodicities, and devised a new method for their investigation. This method is explained, and to some extent applied, in a paper entitled "A Search for Fluctuations in the Sun's Thermal Radiation through their Influence on Terrestrial Temperature." The importance of the question justifies a critical examination of the relationship of the older methods to that of Newcomb, and though I do not agree with his contention that his process gives us more than can be obtained from Fourier's analysis, it has the advantage of great simplicity in its numerical work, and should prove useful in a certain, though I am afraid, very limited field. Let f ( t ) represent a function of a variable which we may take to be the time, and let the average value of the function be zero. Newcomb examines the sum of the series f ( t 1 ) f ( t 1 + τ) + f ( t 2 ) f ( t 2 + τ) + f ( t 3 ) f ( t 3 + τ) + ..., where t 1 , t 2 , etc., are definite values of the variable which are taken to lie at equal distances from each other. If the function be periodic so as to repeat itself after an interval τ, the products are all squares and each term is positive. If, on the other hand, the periodic time be 2τ, each product will be negative and the sum itself therefore negative. It is easy to see that if τ be varied continuously the sum of the series passes through maxima and minima, and the maxima will indicated the periodic time, or any of its multiples.


2018 ◽  
Vol 2 (2) ◽  
pp. 159
Author(s):  
Mulizar Mulizar

This article will discuss hermeneutics as a new method of interpreting the Qur'an.The use of hermeneutics is a new thingin the world of interpretation. Some support and some reject it.The results of this study show that the use of hermeneutics in interpreting the Qur’an must be careful.In addition, This science should be placed as a complement, not as a subdivision of the science of interpretation. On the other hand, hermeneutics paves the way to contextualize the scriptures, so that they can dialogue in different spaces and times, as apologically desirable and held by many religious groups to their respective scriptures.


1934 ◽  
Vol 30 (11-12) ◽  
pp. 1078-1090
Author(s):  
M. E. Vinnikov

As any new method of treatment, gravidanotherapy is met with varying opinions. Some expect "miracles" from this method of treatment, believing that gravidanotherapy has found a new all-encompassing, excluding all other methods of treatment. On the other hand, there is an undeniable tendency to downplay or even completely deny the importance of gravidanotherapy. Finally, some authors consider gravidanotherapy as a method giving only subjective improvement of patients' well-being, the success of which is based on mass psychotherapy. Meanwhile, there is no doubt that gravidan, given its composition, should have a significant effect on the human body. It is only necessary that clinical observations and experimental verification give an unbiased assessment of the action of the drug and determine the place of gravidanotherapy in the arsenal of means of modern medicine.


2018 ◽  
Author(s):  
Sigit Haryadi ◽  
Salma Huda California

In this paper, we proposed a modification of the measurement of the personality consistency level of the Pauli & Kraepelin Test in the field of psychology, using the formula made in April 2016, by Sigit Haryadi, and named "the Harmony in Gradation" or “the Haryadi Index”. The purpose of this proposal is because the existing formula uses only the mean value of the deviation, which leads to the possibility that the result of consistency measurement on people whose facts are different levels of consistency will be considered to have the same consistency level, on the other hand, the proposed method will be more accurate and precise in terms of providing an assessment of the level of personality consistency of a person.


2004 ◽  
Vol 811 ◽  
Author(s):  
Masashi Miyakawa ◽  
Katsuro Hayashi ◽  
Yoshitake Toda ◽  
Toshio Kamiya ◽  
Masahiro Hirano ◽  
...  

ABSTRACTA new method to convert 12CaO7Al2O3 (C12A7) thin films to electronic conductor by hot Ar+ ion implantation has been developed and its mechanism is discussed. It was found that hot Ar+ ion implantation extruded free O2- ions in C12A7 films by kick-out effects at fluences higher than 1×1017 cm−2, which left electrons in the cages embedded in C12A7 crystal and produced high concentration F+-like centers (∼1.4×1021 cm−3). The resulting films show coloration and persistent electronic conduction with conductivities up to ∼1 Scm−1. On the other hand, fluences less than 1×1017 cm−2 kept the films transparent and insulating.


1989 ◽  
Vol 131 ◽  
pp. 226-226
Author(s):  
Sueli M. Viegas-Aldrovandi

The study of nebular continuum emission is important for several reasons (Pottasch 1984, Planetary Nebulae, Dordrecht: Reidel). First of all, it can provide information about the temperature and the density of the nebula, when the object is large enough, or when the central star is weak enough, so that the nebular continuum is easily observed without interference from the stellar continuum. On the other hand, for small planetary nebulae, both the central star and the nebula contribute to the observed continuum. In this latter case, in order to obtain the stellar continuum the theoretical nebular emission must be used. Thus, studies of the evolution of planetary nebula nuclei through the HR diagram rely on a good calculation of the theoretical nebular continuum.


Author(s):  
Olipriya Chakraborty

The 7-day experiment was conducted to find out the behavior of people on the social media platform of YouTube. It addressed whether people spend most of their time on YouTube watching education-based videos or entertainment-based videos. It was an experiment using a new method to take a fresh look at existing ideas. The research was conducted to find out the productivity of people on YouTube. Two YouTube channels were formed and a video posted every day and their views, as well as the new number of subscribers, were recorded every 24 hours. One of the channels was education-based while the other was entertainment-based. Finally, it was found out that the education-based channel had gained 4 new subscribers and the total number of views was 32. The entertainment-based channel, on the other hand, had gained 16 subscribers. The total number of views was 237. Thus, it can be effectively concluded that people tend to spend their time watching entertaining videos as opposed to educational videos on YouTube. It means they tend to spend their time less productively.


2020 ◽  
Author(s):  
Alberto Tejero ◽  
Gonzalo León

This article, as a main contribution, shows a new agile way to manage and monitor R&I projects, by monitoring product development. In addition, a new way of calculating the rigor of this type of projects is presented using the “3D rigor method”, based on obtaining the rigor measures of the product, process and reputation of the project researchers. Thanks to this new method, it is possible to know the rigor of an R&I project at any time during its development, which enables its monitoring and management to adapt it to the interests and needs of each situation. On the one hand, this method is presented as a tool of great utility for new researchers, since it will allow them to guide the development of their R&I project in an agile way, adjusted to the speed of the current times, while maintaining minimum levels of rigor and scientific quality. On the other hand, the method is highly recommended for all those organizations that promote and support the development of new R&I projects, enabling them to mentor and guide the projects towards the achievement of specific objectives and viable projects.


Vox Patrum ◽  
2013 ◽  
Vol 59 ◽  
pp. 331-338
Author(s):  
Sławomir Wyszomirski

Two issues were raised in the article entitled „Dishes at Nasidien’s feast (Horatius, Saturae II 8) and Apicius’ De re coquinaria”. First, comparison of dishes the description of which Horace included in Saturae II 8 with heir analog­ical recipes for these from Apicius’ De re coquinaria. These comparisons lead to the conclusion that, even in Augustan times, developing the culinary art had its supporters and that the chefs were trying to surprise symposium participants with new ideas, which made them experiment in this area all the time. An example of such efforts, among the others, is the method of making a sauce which was used to put on Nasidien’s moray, or wild pigeons whose croups had been cut off. On the other hand, on the example of De re coquinaria we can observe the evolution of culinary art which attached more and more importance to various kinds of spices used in more and more sophisticated sauces which gave a proper taste to diverse dishes of fish, poultry and game. The other issue, which is still present, is proper understanding and interpretation of these fragments of Horace’s Saturae II 8 where the poet gives us a description of dishes prepared by Nasidien’s chefs. Among the others, attention was drawn to the fact that the notion of faecula Coa (Saturae II. 8. 9) shall not be understood, as assumed before, as dried powdered yeast or wine grounds but rather as a substitute for grape honey described by Isidor (Etymologiae XX 3, 13: „Faecula uva pinguis, decocta usque ad crassitu­dinem mellis, ac refrigata, utilis stomacho”). This understanding of faecula Coa lets us read differently 6-9 verses in Saturae II 8 where the wild boar served by Nasidien was poured over by cheap substitutes, i.e. so called allec sauce (instead of liquamen) and faecula Coa (instead of honey). The Horace’s description, thus, has, in this place an ironic implication. It was also suggested that the 51-53 verses in Saturae II 8, where Nasidien boasts that he was the first one with the idea of boiling eruca sativa (rucola) with inula helenium, should be linked with previous verses which give the description of the sauce used for pouring over moray as eruca sativa boiled with inula helenium did not form a new dish but it was an ingredient of the mentioned sauce. Information about liver of a white goose fed with figs in Saturae II 8, 88 deserves special attention. We cannot find this dish recipe in Apicius’ De re coquinaria. However, we learn from the Plinius’ account that it was Apicius who invented a new method of preparing goose liver (Plinius, Historia naturalis VIII 209: Adhibetur et ars iecori feminarium sicut anserum, inventum M. Apici, fico arida saginatis ac satie necatis repente mulsi potu dato). This method involved feeding those birds with figs before they were killed. This way ensured that goose liver had a right taste and later wine with honey was add­ed to it. However, according to Horace’s information, which cannot be shaken, the custom of feeding geese with figs had been known before Apicius. As, on the basis of preserved records on Apicius’ life, it is difficult to confirm that he lived in Horace’s times it seems necessary to correct the account of Pilnius and to interpret it in the way that the innovation of Apicius involved only serving liver with some wine with honey (muslum), not feeding geese with figs as this practice had been done much earlier.


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