Qualidade de maçãs 'Royal Gala' submetidas ao dano mecânico por impacto e aplicação de 1-Metilciclopropeno em dois sistemas comerciais de armazenamento.

O objetivo deste trabalho foi avaliar os efeitos do dano mecânico por impacto e da aplicação de 1-metilciclopropeno (1-MCP) sobre a qualidade de maçãs ?Royal Gala? mantidas em armazenamento refrigerado (AR) e em atmosfera controlada (AC). Os tratamentos avaliados foram dano mecânico (sem e com dano por impacto) combinado com a aplicação de 1-MCP (0 e 625 nL L-1). Os frutos foram armazenados durante quatro meses em armazenamento refrigerado (AR; 0 ºC ± 1 ºC e 92 ± 2 % de UR) (experimento 1) e durante oito meses em atmosfera controlada (AC; 1,2 kPa de O2 + 2,0 kPa de CO2; 0 ºC ± 0,1 ºC e 96 ± 2 % de UR) (experimento 2). Em AR, os frutos tratados com 1-MCP apresentaram maior firmeza de polpa, além de maior área escurecida no local danificado, na saída da câmara. Nesta condição de armazenamento, após sete dias em condição ambiente, os frutos tratados com 1-MCP apresentaram acidez titulável mais elevada, maior escurecimento da epiderme e menor profundidade de escurecimento da polpa no local danificado. Em AC, a aplicação do 1-MCP proporcionou, após a saída da câmara, frutos com menor teor de sólidos solúveis e maior escurecimento da epiderme no local danificado, sendo que, após sete dias em condição ambiente, os frutos apresentaram maior profundidade de escurecimento do tecido da polpa no local danificado. O dano por impacto ocasionou escurecimento da polpa de maçãs ?Royal Gala?. O 1-MCP não inibiu os efeitos do dano, mas preservou a qualidade dos frutos, especialmente em AR

Dealing with False Memories in Children and Adults: Recommendations for the Legal Arena

Children are often viewed as poor eyewitnesses. Fact-finders, lawyers, and researchers assume that children are exceptionally prone to accept external suggestive (leading) questions and to create false memories. Is this assumption justified? This review will show it is not. First, studies on spontaneous false memories— elicited without any suggestive pressure—reveal that children are less likely than adults to produce them. Second, under certain circumstances, children are even less prone to accept external suggestions than adults. This counterintuitive finding happens when false suggestions contain information that is associatively related but in actuality not experienced by children or adults. Using empirically-based interview protocols can maximize the retrieval of accurate memories in children and adults. Furthermore, expert witnesses should use alternative scenarios in order to better evaluate whether statements by children or adults are based on truth or fiction

Effects of synthesis parameters on the properties and photocatalytic activity of the magnetic catalyst TiO2/CoFe2O4 applied to selenium photoreduction

intake to human health. Heterogeneous photocatalysis can be successfully applied to remove selenium ions from water, but the photocatalyst recovery in the end of the process still needs improvement. The application of a magnetic photocatalyst (TiO2/CoFe2O4) in the Se(IV) photoreduction was investigated, with emphasis in the catalyst magnetic separation. The photocatalyst was synthetized via a simple sol-gel method and a central composite design was considered to evaluate the effects of titanium isopropoxide mass ratio used in the synthesis, calcination temperature and pH on Se(IV) reduction. Calcination temperature showed a strong influence in the photocatalytic activity, and the catalyst calcined at 381 ◦C presented the best performance. In the bests test, at pH 2.61, it was possible to remove >99% selenium after 2 min of exposure to radiation. Photocatalysts containing great amounts of rutile phase produced the lowest removal results. The TiO2/CoFe2O4 photocatalyst was magnetically separable, however its saturation magnetization (2.7 emu g 1) was considerably smaller than pure CoFe2O4 (84.6 emu g 1) and the photocatalyst magnetic separation from the aqueous medium was about 11 times slower in comparison to pure cobalt ferrite. The synthetized photocatalyst was able to satisfactorily photoreduce Se(IV) (96.5%) even after five cycles of photocatalysis

Comparison of first-line chemotherapy regimens for ovarian carcinosarcoma: a single institution case series and review of the literature

Abstract Background The optimal first-line chemotherapy for ovarian carcinosarcoma has not yet been determined. We therefore sought to determine the progression-free survival (PFS) and overall survival (OS) for patients with ovarian carcinosarcoma treated at our institution with different first-line chemotherapy regimens. Methods This single-institution, retrospective analysis included all patients with ovarian or primary peritoneal carcinosarcoma diagnosed from September 1996 to July 2017. Kaplan Meier analysis with a log-rank Mantel-Cox test was used to compare PFS and OS between treatment groups, and a p-value of < 0.05 was considered statistically significant. Results Thirty-one patients met inclusion criteria: two patients were stage IC, 5 were stage II, 21 were stage III, and 3 were stage IV. The median PFS and OS for all stages was 9.3 and 19.7 months respectively. Fifteen patients (48%) received carboplatin/paclitaxel as first therapy, 7 (23%) received ifosfamide/paclitaxel, 6 (19%) received a different regimen, and 3 (10%) did not receive chemotherapy. Patients treated with carboplatin/paclitaxel had a statistically significant longer PFS when compared to those receiving ifosfamide/paclitaxel (17.8 vs. 8.0 months, p = 0.025). OS was similar between all comparisons. Conclusions In summary, in our cohort of ovarian carcinosarcoma patients, median PFS is longer in patients treated with carboplatin/paclitaxel compared to ifosfamide/paclitaxel. Overall survival was similar for all treatment groups, potentially due to subsequent treatment crossover. Given the rarity and aggressive nature of this tumor, further study into optimal first-line chemotherapy is warranted.https://deepblue.lib.umich.edu/bitstream/2027.42/142348/1/12885_2018_Article_4082.pd