New Formulation of TiO2- ZnO Slurry for Facial Foundation Sunscreen Cream Application

2021 ◽  
Vol 1047 ◽  
pp. 103-110
Author(s):  
Nuchanaporn Pijarn ◽  
Wisallaya Jankasemsook ◽  
Supanida Suwantha ◽  
Janpen Intaraprasert

The objective of this research was to prepare ready-to-use TiO2 and ZnO in slurry form for ready-to-use in facial foundation sunscreen. Two types of TiO2 sources were prepared as TiO2 slurry namely commercial TiO2 powder and synthesized TiO2 powder. Preparation of formula 1, 35 g solution PEG-10 dimethicone, and added 20 g solution cyclomethicone after that 45 g TiO2 powder was added slowly to the prepared substance, stirring and heated to 60-70 °C, and stir until the substance mix well. Formula 2, 46 g solution cyclomethicone added 2.5 g stearic acid and 2 g aluminum hydroxide after that stirring and heated to 60-70 °C until the substance mixed well, and TiO2 powder 49.5 g was added slowly to the continuous stirred and heated. On the other hand, ZnO slurry was prepared in the same steps. The results show that formula 1was the best formulation. Due to it was not precipitation and good compatibility with an emulsifier, therefore, formula 1was chosen to study in various volumes. The texture and stability of the prepared slurry were similar to the commercial slurry. Two sunscreen formulas were differently formulated by containing prepared and commercial slurry and evaluated. There were no significant differences in results between prepared slurry and commercial slurry. To investigate the satisfaction of products, 30 volunteers were asked to use products for one week and answer the questionnaires. The product containing prepared slurry was satisfied by 93.33% of volunteers, whereas the product containing commercial slurry was satisfied by 76.66% of volunteers.

1967 ◽  
Vol 61 (4) ◽  
pp. 983-988 ◽  
Author(s):  
James N. Rosenau

When the laws of social dynamics are codified, surely the First will be that people see what they want to see. Given its universality, the First Law is no less applicable to scholars than anyone else. As political scientists, seeing what we want to see in a colleague's work, we find it “insightful,” “constructive,” and “important”; alternatively, not seeing in it what we want to see or, even worse, seeing what we don't want to see, we find it “turgid,” “misleading,” and “trivial.”So it is with Hanrieder's formulation. Since it is only a bare outline and contains no data, no one is likely to regard his article as a definitive statement, but reactions to it are likely to be quite varied and conflicting. Some readers, especially those who worry about the prevalence of a malady they call “methodologism” in political science, will see in Hanrieder's effort to develop the concepts of compatibility and consensus yet another case of the quibbling over words that is the prime symptom of this affliction. After all, such critics will point out, compatibility and consensus are, respectively, only thirteen- and nine-letter words and to claim great explanatory power for them without elaboration is to substitute the form of language for the substance of thought. In a similar manner those long committed to a particular framework for examining foreign policy phenomena will preserve their commitment and wonder why Hanrieder makes so much fuss about the need for a new formulation when the available conceptual equipment seems capable of handling the convergence of national and international politics. After all, these analysts will conclude, Hanrieder himself says that researchers should be less inclined to create new schemes and more ready to build on existing ones; why, then, does he not follow his own advice?On the other hand, analysts who are themselves perplexed by the convergence of national and international politics are likely to be more sympathetic to Hanrieder's effort, if not to its result. They may have doubts as to whether Hanrieder's unqualified claims for the concepts of compatibility and consensus are justified, but they will see his article as a serious attempt to confront a genuine and difficult problem.


1999 ◽  
Vol 173 ◽  
pp. 249-254
Author(s):  
A.M. Silva ◽  
R.D. Miró

AbstractWe have developed a model for theH2OandOHevolution in a comet outburst, assuming that together with the gas, a distribution of icy grains is ejected. With an initial mass of icy grains of 108kg released, theH2OandOHproductions are increased up to a factor two, and the growth curves change drastically in the first two days. The model is applied to eruptions detected in theOHradio monitorings and fits well with the slow variations in the flux. On the other hand, several events of short duration appear, consisting of a sudden rise ofOHflux, followed by a sudden decay on the second day. These apparent short bursts are frequently found as precursors of a more durable eruption. We suggest that both of them are part of a unique eruption, and that the sudden decay is due to collisions that de-excite theOHmaser, when it reaches the Cometopause region located at 1.35 × 105kmfrom the nucleus.


Author(s):  
A. V. Crewe

We have become accustomed to differentiating between the scanning microscope and the conventional transmission microscope according to the resolving power which the two instruments offer. The conventional microscope is capable of a point resolution of a few angstroms and line resolutions of periodic objects of about 1Å. On the other hand, the scanning microscope, in its normal form, is not ordinarily capable of a point resolution better than 100Å. Upon examining reasons for the 100Å limitation, it becomes clear that this is based more on tradition than reason, and in particular, it is a condition imposed upon the microscope by adherence to thermal sources of electrons.


Author(s):  
K.H. Westmacott

Life beyond 1MeV – like life after 40 – is not too different unless one takes advantage of past experience and is receptive to new opportunities. At first glance, the returns on performing electron microscopy at voltages greater than 1MeV diminish rather rapidly as the curves which describe the well-known advantages of HVEM often tend towards saturation. However, in a country with a significant HVEM capability, a good case can be made for investing in instruments with a range of maximum accelerating voltages. In this regard, the 1.5MeV KRATOS HVEM being installed in Berkeley will complement the other 650KeV, 1MeV, and 1.2MeV instruments currently operating in the U.S. One other consideration suggests that 1.5MeV is an optimum voltage machine – Its additional advantages may be purchased for not much more than a 1MeV instrument. On the other hand, the 3MeV HVEM's which seem to be operated at 2MeV maximum, are much more expensive.


2005 ◽  
Vol 19 (3) ◽  
pp. 129-132 ◽  
Author(s):  
Reimer Kornmann

Summary: My comment is basically restricted to the situation in which less-able students find themselves and refers only to literature in German. From this point of view I am basically able to confirm Marsh's results. It must, however, be said that with less-able pupils the opposite effect can be found: Levels of self-esteem in these pupils are raised, at least temporarily, by separate instruction, academic performance however drops; combined instruction, on the other hand, leads to improved academic performance, while levels of self-esteem drop. Apparently, the positive self-image of less-able pupils who receive separate instruction does not bring about the potential enhancement of academic performance one might expect from high-ability pupils receiving separate instruction. To resolve the dilemma, it is proposed that individual progress in learning be accentuated, and that comparisons with others be dispensed with. This fosters a self-image that can in equal measure be realistic and optimistic.


Author(s):  
Stefan Krause ◽  
Markus Appel

Abstract. Two experiments examined the influence of stories on recipients’ self-perceptions. Extending prior theory and research, our focus was on assimilation effects (i.e., changes in self-perception in line with a protagonist’s traits) as well as on contrast effects (i.e., changes in self-perception in contrast to a protagonist’s traits). In Experiment 1 ( N = 113), implicit and explicit conscientiousness were assessed after participants read a story about either a diligent or a negligent student. Moderation analyses showed that highly transported participants and participants with lower counterarguing scores assimilate the depicted traits of a story protagonist, as indicated by explicit, self-reported conscientiousness ratings. Participants, who were more critical toward a story (i.e., higher counterarguing) and with a lower degree of transportation, showed contrast effects. In Experiment 2 ( N = 103), we manipulated transportation and counterarguing, but we could not identify an effect on participants’ self-ascribed level of conscientiousness. A mini meta-analysis across both experiments revealed significant positive overall associations between transportation and counterarguing on the one hand and story-consistent self-reported conscientiousness on the other hand.


2019 ◽  
Vol 50 (2) ◽  
pp. 80-93
Author(s):  
Jort de Vreeze ◽  
Christina Matschke

Abstract. Not all group memberships are self-chosen. The current research examines whether assignments to non-preferred groups influence our relationship with the group and our preference for information about the ingroup. It was expected and found that, when people are assigned to non-preferred groups, they perceive the group as different to the self, experience negative emotions about the assignment and in turn disidentify with the group. On the other hand, when people are assigned to preferred groups, they perceive the group as similar to the self, experience positive emotions about the assignment and in turn identify with the group. Finally, disidentification increases a preference for negative information about the ingroup.


1961 ◽  
Vol 6 (6) ◽  
pp. 222-223
Author(s):  
Edwin G. Boring
Keyword(s):  

2005 ◽  
Vol 44 (03) ◽  
pp. 107-117
Author(s):  
R. G. Meyer ◽  
W. Herr ◽  
A. Helisch ◽  
P. Bartenstein ◽  
I. Buchmann

SummaryThe prognosis of patients with acute myeloid leukaemia (AML) has improved considerably by introduction of aggressive consolidation chemotherapy and haematopoietic stem cell transplantation (SCT). Nevertheless, only 20-30% of patients with AML achieve long-term diseasefree survival after SCT. The most common cause of treatment failure is relapse. Additionally, mortality rates are significantly increased by therapy-related causes such as toxicity of chemotherapy and complications of SCT. Including radioimmunotherapies in the treatment of AML and myelodyplastic syndrome (MDS) allows for the achievement of a pronounced antileukaemic effect for the reduction of relapse rates on the one hand. On the other hand, no increase of acute toxicity and later complications should be induced. These effects are important for the primary reduction of tumour cells as well as for the myeloablative conditioning before SCT.This paper provides a systematic and critical review of the currently used radionuclides and immunoconjugates for the treatment of AML and MDS and summarizes the literature on primary tumour cell reductive radioimmunotherapies on the one hand and conditioning radioimmunotherapies before SCT on the other hand.


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