13 research outputs found
Penerapan Pendekatan Pengajaran Terbalik (Reciprocal Teaching) Untuk Meningkatkan Kemandirian Belajar Biologi Siswa Kelas Vii-g SMP N 5 Karanganyar Tahun Pelajaran 2010/ 2011
– The objective of this study is to improve student independence in learning biology by implementing Inverted Teaching Approach (Reciprocal Teaching) on Environmental Management material. This research is a classroom action research. This research was conducted in two cycles. Each cycle consisted of planning, implementation of the action,observation, and reflection. The subjects of the study were VII-G class students of SMP Negeri 5 Karanganyar in the academic year of 2010/2011. The number of the students was 32. The technique and instrumen of collectiing data were questionnaire, observation, and interviews. The technique of analyzing data was descriptive analysis techniques. Triangulation technique was used in data validation. The results proved that by implementing Inverted Teaching Approach (Reciprocal Teaching) students\u27 independence in learning biology enhanced. It is based on the results of questionnaires, observations and interviews. The questionnaire of students\u27 learning independence showed that the mean percentage of students\u27 achievement in each indicator in pre-cycle, cycle I, and cycle II was 67.97%, 72.55%, and 77.58% respectively. The observation of students\u27 learning independence showed that the mean percentage of students\u27 achievement in each indicator in pre-cycle, cycle I, and cycle II was 39.68%, 67.5%, and 80.62% respectively. It can be concluded that the implementation of Inverted Teaching Approach (Reciprocal Teaching) can enhance students learning independence
Correction: Yang et al. Detecting Spatiotemporal Features and Rationalities of Urban Expansions within the Guangdong–Hong Kong–Macau Greater Bay Area of China from 1987 to 2017 Using Time-Series Landsat Images and Socioeconomic Data. <i>Remote Sens.</i> 2019, <i>11</i>, 2215
The authors wish to make the following corrections to the paper [...
Correction: Yang et al. Detecting Spatiotemporal Features and Rationalities of Urban Expansions within the Guangdong–Hong Kong–Macau Greater Bay Area of China from 1987 to 2017 Using Time-Series Landsat Images and Socioeconomic Data. Remote Sens. 2019, 11, 2215
The authors wish to make the following corrections to the paper [...
Splitting a Droplet for Femtoliter Liquid Patterns and Single Cell Isolation
Well-defined microdroplet generation
has attracted great interest,
which is important for the high-resolution patterning and matrix distribution
for chemical reactions and biological assays. By sliding a droplet
on a patterned superhydrophilic/superhydrophobic substrate, tiny microdroplet
arrays low to femtoliter were achieved with uniform volume and composition.
Using this method, cells were successfully isolated, resulting in
a single cell array. The droplet-splitting method is facile, sample-effective,
and low-cost, which will be of great potential for the development
of microdroplet arrays for biological analysis as well as patterning
system and devices
Rayleigh Instability-Assisted Satellite Droplets Elimination in Inkjet Printing
Elimination
of satellite droplets in inkjet printing has long been desired for
high-resolution and precision printing of functional materials and
tissues. Generally, the strategy to suppress satellite droplets is
to control ink properties, such as viscosity or surface tension, to
assist ink filaments in retracting into one drop. However, this strategy
brings new restrictions to the ink, such as ink viscosity, surface
tension, and concentration. Here, we report an alternative strategy
that the satellite droplets are eliminated by enhancing Rayleigh instability
of filament at the break point to accelerate pinch-off of the droplet
from the nozzle. A superhydrophobic and ultralow adhesive nozzle with
cone morphology exhibits the capability to eliminate satellite droplets
by cutting the ink filament at breakup point effectively. As a result,
the nozzles with different sizes (10–80 μm) are able
to print more inks (1 < <i>Z</i> < 38), for which
the nozzles are super-ink-phobic and ultralow adhesive, without satellite
droplets. The finding presents a new way to remove satellite droplets
via designing nozzles with super-ink-phobicity and ultralow adhesion
rather than restricting the ink, which has promising applications
in printing electronics and biotechnologies
Programmed Coassembly of One-Dimensional Binary Superstructures by Liquid Soft Confinement
Precise
control of particles co-assembly has attracted great attention
for fabricating intricate structures and functional materials. However,
achieving precise co-assembly of one-dimensional (1D) binary superstructures
remains challenging due to the constrained thermodynamic stability
and lack of general strategies to control the 1D ordered arrangement
of mixed particles. Here, we propose a facile strategy to achieve
programmed co-assembly of 1D binary superstructures by liquid soft
confinement without particle modification or external field. It reveals
that binary particles undergo stepwise confinement and programmed
co-assembly in the gradually shrinking and spatially tunable liquid
soft confinement. Through tuning the liquid confined space and particles
composition, diverse 1D binary superstructures with precisely controlled
periodicity, orientation and symmetry are achieved, which shows generality
for various particles of different sizes and materials. This work
provides a promising route to refined patterning and manufacturing
complex materials