Teaching and Learning Analytical Exposition Paragraph Writing (Dictogloss Technique)

Writing is one of skills in English. It is often considered a difficult subject by the students. Some techniques are needed by the teacher to overcome writing difficulties. One of technique is Dictogloss. Furthermore, students often make mistake in writing while targeted to reconstruct the paragraph. The objective of the research was to describe the process of teaching and learning analytical exposition paragraph writing by using dictogloss technique and to construe the teacher\u27s problems and students\u27 problems in teaching and learning. This research was a descriptive qualitative research. The subject of the research was the eleventh grade. The researcher applied the purposive sampling technique to determine the sample. The researcher adopted and determined one class as a sample. As well, the researcher chose class XI IPA 4 for the reason that the students of this class had difficulties in mastering writing skill. The total number of the sample was 39 students. The researcher used triangulation to collect the data, they were observation, interview, and questionnaire. From the data analysis, the researcher found the teacher who got some difficulties to handle the crowded class. Besides that, the teacher had low voice in teaching so the students did not hear clearly until behind of the class. Second, the students\u27 --in learning analytical exposition paragraph writing by using dictogloss-- had adversities in reconstructing the version of analytical exposition paragraph. That was because they had limited vocabulary, poor organization, spelling, and capitalization letters. A step form that, the students had lack motivation in learning writing

Starvasi Nitrogen Dan Pengaruhnya Terhadap Biomassa Dan Protein Total Nannochloropsis SP. (Nitrogen Starvation Effect on Biomass and Crude Protein of Nannochloropsis SP)

Pengurangan nitrogen anorganik sebagai nutrien pada media kultur merupakan salahsatu metode untuk mempersingkat fase eksponensial pada kultur mikroalgae.Pengurangan nitrat anorganik pada media kultur Nannochloropsis sp hingga 50%dari konsentrasi normal pada media kultur Conwy ternyata mampu menurunkankepadatan rata-rata (sel/ml) hingga 15,16 % dan menurunkan pula kandungan proteintotal 13,93 %. Fenomena tersebut mengindikasikan bahwa pengurangan nitrogenanorganik pada media kultur berdampak negatif pada kepadatan (sel/ml) dankandungan protein total namun mampu mereduksi waktu kultur pada faseeksponensial mikroalgae Nannochloropsis sp

An automated liquid jet for fluorescence dosimetry and microsecond radiolytic labeling of proteins.

X-ray radiolytic labeling uses broadband X-rays for in situ hydroxyl radical labeling to map protein interactions and conformation. High flux density beams are essential to overcome radical scavengers. However, conventional sample delivery environments, such as capillary flow, limit the use of a fully unattenuated focused broadband beam. An alternative is to use a liquid jet, and we have previously demonstrated that use of this form of sample delivery can increase labeling by tenfold at an unfocused X-ray source. Here we report the first use of a liquid jet for automated inline quantitative fluorescence dosage characterization and sample exposure at a high flux density microfocused synchrotron beamline. Our approach enables exposure times in single-digit microseconds while retaining a high level of side-chain labeling. This development significantly boosts the method's overall effectiveness and efficiency, generates high-quality data, and opens up the arena for high throughput and ultrafast time-resolved in situ hydroxyl radical labeling